Based on information from a large insurance company, 68% of all damage liability claims are made by single people under the age of 25. A random sample of 54 claims showed that 41 were made by single people under the age of 25. Does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? State the null and alternate hypothesis.

Q: A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: There are 57 runners in the race. How many ways can the runners finish first second and third.

A: given data, there are 57 runners in the race we have to find out the no. of ways can runners finish…

Q: Compare Forward and Backward Stepwise Selection advantages and disadvantages.

A: Solution: Here, it is to compare forward and backward stepwise selection.

Q: a particular test for Diabetes, 93% of those who were known to have the disease showed a positive…

A: * solution :-    From the given information the answer is given as

Q: The mean tuition cost at state universities throughout the United States is $4,260 per year. Use…

A: From the provided information, Mean (µ) = 4260 Standard deviation (σ) = 900 X~N (4260, 900) Sample…

Q: Compare empirically Samirnov test to test the normality the power of Shapiro-Wilk test and…

A: Solution: According to the guidelines if multiple questions are asked only first question should be…

Q: Question 11 If n=12 and π = 0,65, then the mean of the binominal distribution is a) 2.275 1.508 6.5…

A: The mean of the binomial distribution can be computed as                                       mean…

Q: The expected value E(x) of a binomial probability distribution is

A: Given data The expected value of a binomial probability distribution is

Q: Based on this p value can we reject the null hypothesis??

A: The test for a difference in proportions output is given.

Q: d) Find the mean square error of the regression e) Find the relative efficiency of the regression…

A: Given information: SX=1N-1∑Xi2i=1N-NX¯2    =1100-1850000-100*352   =85.7233…

Q: 4. Suppose that 15% of the fields in a given agricultural area are infested with the sweet potato…

A:

Q: 3. A financial advisor needs to meet her quota of 30 clients in a year. To do that, she sought help…

A: 3 :  She needs to meet her quota of 30 clients :  She ask her friends to as their friends to be…

Q: A researcher is interested in whether there is a difference in the number of cuddles three types of…

A: A researcher is interested in whether there is a difference in the number of cuddles three types of…

Q: Problem 7: The work needs to be completed in Excel. Show all your work. Suppose you have an idea for…

A: Given information: The fixed costs are estimated at $500,500. Selling price for the item initially =…

Q: uppose a simple random sample of size n=50 is obtained from the population whose size is N=10,000…

A: Solution: Given information: N= 10000 Population size n= 50 sample size  p = 0.4 Population…

Q: ow could knowledge of probabilities be used to analyse the data given in the table?

A: Essay Quarrie Taylor Wilson Forbes 1 62 63 65 68 2 58 60 61 64 3 63 68 72 58 4 64 65 65 61…

Q: You are conducting a study to see if the proportion of men over 50 who regularly have their prostate…

A: given data claim : p<0.42left tailed test test statistic Z = -2.91we have to find p value.

Q: Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a…

A: Given X = $22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65 n=7 Standard deviations=2.50

Q: Contruct a 90% confidence interval to estimate how much the drug will lower a typical patient's…

A: It is given that  Sample mean, X̄ = 38 Sample standard deviation, s = 9 Sample size, n = 15

Q: What is df total?

A: What is df total?

Q: If you use a  0.05 level of significance in a​ two-tail hypothesis​ test, what decision will you…

A: The given ZSTAT is -2.03 and level of significance is 0.05.

Q: For the standard normal variable Z, find the probability P(Z>2.86)P(Z>2.86) : P(Z>2.86)=

A: Given data for the standard normal variable Z  find the probability p(z>2.86)=?

Q: manufacturing industry, the number of industrial accidents averages three per week. Find the…

A: Given that  The number of industrial accidents averages three per week. X ~ Poisson (M = 3)

Q: Question 17 When testing for independence in a contingency table with 2 rows and 2 columns, there…

A: 2 raws and 2 columnstesting for independence in a contingency table. degrees of freedom = ?

Q: A population of values has a normal distribution withμ = 153.2 and a = 92.2. You intend to draw a…

A: given data a population of values has a normal distribution μ=153.2σ=92.2n=205we have to find out…

Q: If  z  is a standard normal variable, find the probability. P>z0.58     0.2327     0.2483…

A: Given information- We have given the standard normal distribution. We have to find the probability-…

Q: Twenty percent of the tires manufactured by a company are snow tires. Suppose 15 tires made by this…

A: It is given that the probability, p = 20% = 0.20 and sample size n = 15 ( fixed ). So, we can use…

Q: Given the spot speed of 20 vehicles on a certain traffic section. Use 8 classes. Determine: a. The…

A: Please find the explanation below. As asked by you, I have answered the questions (a) and (b).

Q: Scenario 3 Suppose a professor is interested in seeing whether or not gum can be used as a…

A: Given the data as Participant Number Group Membership Exam Scores 1 No Gum 75 2 No Gum 64 3…

Q: 1. A planner wishes to estimate average household size for a community to within an accuracy of…

A: According to the given information in this question We need to answer question number 5

Q: QUESTION 2 How do you calculate the sum of squares when only the standard deviation of the sample is…

A: It is given that the statement about to the sum of squares. Here, need to find out the correct…

Q: Direction: Perform hypothesis testing. Show all the steps and solutions. Note: Excel / Stat…

A: Given  n=10 Null and Alternative Hypothesis  H0:ud=0 H:ud>0 where ud=ubefore=uafter

Q: simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=121.6…

A:

Q: ven a normal random variable X with mean 20 and variance 9, and a random sample of size n taken from…

A: GIVEN DATA,normal distribution μ=20σ2=9σ=3P ( 1 9 . 9 ≤ x¯̄≤ 2 0 . 1 ) = 0 . 9 0sample size n =?

Q: For a uniform random variable U∼U(7,24)U∼U(7,24), find the probability P(U>12)P(U>12):…

A: given data uniform distributionX~U(7,24)we have to find out p(U>12)=?

Q: A very large bag contains more coins than you are willing to count. Instead, you draw a random…

A: From given data we have : Quarters = 26 Dimes = 23 Nickels = 22 Pennies = 29 Total = 100

Q: e patient recovery time from a particular surgical procedure is normally distributed with a mean of…

A: GIVEN DATA, normal distribution μ=5.3σ=1.1we have to find out the given probabilties

Q: Find t0.69t0.69 for TT distribution with 8282 degrees of freedom. t0.69=t0.69= (Round the answer to…

A: We need to find t0.69 for T distribution with 82 degrees of freedom.

Q: e that you have a sample of n1=7 ​, with the sample mean X1=44  ​, and a sample standard deviation…

A: given data,n1=7x¯1 =44s1 =6n2=6x¯2 =32s2 =5α=0.01assuming the population variances are equal

Q: One of the most​ impressive, innovative advances in online fundraising over the past decade is the…

A: Comment: As per the company guidelines we are supposed to answer only three subparts. Kindly repost…

Q: A consumer advocacy group published a study of labeling of seafood sold in three U.S. states. The…

A: Bit A is not mentioned in the question please check it . Given, n=20x=10sample…

Q: ►SHOW ANSWER 8.6 SP According to the General Social Survey, the average age when a person's first…

A: Given that  We have to conduct hypothesis testing for Are working-class people in urban areas…

Q: Perform hypothesis testing. Show all the steps and solutions. Note: Excel / Stat computation…

A: Null Hypothesis: H0: SBP of the volunteers after pill is not less than the SBP of the volunteers…

Q: If we find a 95% confidence interval using a sample, then we can say... 95% of individuals will fall…

A: According to the given information in this question We need to identify the correct option

Q: The average charitable contribution itemized per income tax return in a certain state is $792.…

A: Given Mean=792 Standard deviation=103

Q: A standard six-sided die is rolled. What is the probability of rolling a number greater than or…

A: a standard six sided die is rolled.  s  : {1,2,3,4,5,6} P(rolling number greater than or equal to 2)…

Q: website advertises job openings on its website, but job seekers have to pay to access the list of…

A: Givensample size(n)=30Mean(x)=60standard deviation(σ)=10confidence level=95%

Q: A professor has recorded exam grades for 10 students in his class, but one of the grades is no…

A: Given,Total no.of students=10mean score of 10 students=80and the mean score of 9 students=85

Q: Edited SAS Output (PROC REG) for Regression of WGT on HGT Source Model Error Corrected Total OF Sum…

A: Note: As per the requirement, solving part(d)-part(f) Regression analysis provides precise estimates…

Q: Question 18 The Score obtained on an emotional intelligence test is normally distributed with an…

A: normal distribution ,μ=120σ=10.5 probabilty that a person will optain a score of less than 124=?