Determine arithmetic the mean of the following data points: 39.5 85.6 47.0 29.7 36.1 46.6 44.1 14.9 11.4

Q: Find z-score such that the area under the standard normal curve to its left is 0.9491 Z-score

A: given data, standard normal curve x~N (0,1)here we know that for standard  normal curve μ=0σ=1we…

Q: Find the sample size needed to estimate the mean age of movie patrons such that it can be said with…

A: given data,CI=0.98E=1σ=19.6n=?

Q: According to statistics reported on CNBC, a surprising number of moter vehicles are not covered by…

A: given data  p = proportion of vehicles not covered by insurance.  n = 200 x = 46 95% ci for p.

Q: A survey conducted by the American Automobile Association showed that a family of four spends an…

A: From the provided information, Sample size (n) = 64 Sample mean (x̄) = 252.45 Sample standard…

Q: Age Male Female 20-34 11.00% 9.00% 35-44 24.00% 19.00% 45-54 39.00% 37.00% 55-64 57.00% 56.00% 65-74…

A: Age Male Female 20-34 11% 9% 35-44 24% 19% 45-54 39% 37% 55-64 57% 56% 65-74 62% 64% 75+…

Q: Part 1 of 3: A researcher wanted to see about how many Americans are in favor of a new Green…

A: given data  n = 535 x = 382 99% ci for P

Q: Republica and the U.S. are among the largest producers of cattle in the world. Using data from the…

A: Population Size No. of Eggs Consumed No. of Cattle Area US 325 million 5070 billion 75.9 million…

Q: You may need to use the appropriate appendix table or technology to answer this question. Consider…

A: Given that  A sample of 50 provided a sample mean of 19.1. The population standard deviation is 2.

Q: 4 The test statistic of z= -1.54 is obtained when testing the claim that p<. This is a left-tailed…

A:

Q: hodate cars and buses. The toll for cars is $3, and the toll for buses is $10. Let X and Y denote…

A: The question is about joint prob. distribution Given :   To find : a ) Expected mean, variance,…

Q: missing value. Determine the probability distribution's The probability that a tutor will see 0, 1,…

A: given data,we know that ∑p(x)=1here we have to find out the value of (x=3) =?

Q: Here are summary statistics for the weights of Pepsi in randomly selected cans: n=36, x=0.82412 lb,…

A: Given,sample size(n)=36sample mean(x¯)=0.82412sample standard deviation(s)=0.00567degrees of…

Q: Quality Progress, February 2005, reports on improvements in customer satisfaction and loyalty made…

A: 6. The sample size is 480 and proportion is 0.45.

Q: A cognitive psychologist studying motivation wants to determine if type of music has any effect on…

A: ANOVA summary table ,   Source  SS df MS F Between  SSB k-1 MSB =SSBk-1 MSBMSW Within  SSW…

Q: DE Is also referred to as the test for overall significance A regression model with only 1…

A: Solution:  We want to match the concepts with their definition.

Q: Part 1 of 3: Assume that a sample is used to estimate a population mean μ. Find the 80% confidence…

A: We have to find confidence interval for population mean (μ). Formula :  CI = x¯ ± E where , x¯ is…

Q: SAME DATA FROM PREVIOUS QUESTION: Here is a distribution of quiz scores for a statistics course: 87,…

A:

Q: If n=23, x=40, and s=5, find the margin of error at a 80% confidence level using the critical value…

A: Here, x=40, s=5, n=23, and CL=0.80. The value of α is, α=1-CL  =1-0.80  =0.20

Q: 2. For boys, the mean number of absences in the first grade is 15 with a standard deviation of 7;…

A: Given that For boys  Sample mean=15 Standard deviation =7 Sample size =100 For girls  Sample mean…

Q: K The data to the right represent the number of customers waiting for a table at 6:00 P.M. for 40…

A: Frequency data is given : We have to calculate relative frequency  Relative frequency=…

Q: Expected Profits from a New Business: Level of Success Hugely Popular Moderate Success Flop…

A: Expected value = x*P(x)  Data is given for Bed &amp; breakfast , Hotel  Flop means loss (negative…

Q: In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1006 working adults…

A: Expected frequency  = (row total*column total)/ Grand total  Chi-square  = sum […

Q: Using MS Excel, run the independent-measures single-factor ANOVA for this severety of depression…

A: Solution: Given information: k= 4 groups  Each group has 6 observation.

Q: Find P-values. Assume normal distribution applies. a. ?1: ? > 0.3; test statistic Z = 2.87 b. ?1: ?…

A: Given that  a H1: μ&gt; 0.3; test statistic Z = 2.87b. H1: μ&lt; 0.55; test statistic: Z = -3.07c.…

Q: food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: Given that  Sample size n =7 98% confidence level.

Q: prose bell Shaped elistribution with a mean. OF 105 and a standard deviation OF 17 using the…

A: given data,bell shaped distribution μ=105σ=17emperical rule, according to emperical rule 68%, 95%…

Q: A Human Resource director of a large company wants to investigate if professional staff takes longer…

A: Note: Hi, there! Since there are more than 3 sub parts, we are answering the first 3 sub-parts.…

Q: 3. A study is conducted on people with glaucoma with higher-than-average blood pressure. The study…

A: Given that, A study is conducted on people with glaucoma with higher-than-average blood pressure.…

Q: For the following data set would you be more interested in looking at the mean median mode? State…

A: For the Following data set. would you be more interested in looking at the mean median mode? State…

Q: Find critical values. Assume normal distribution applies. a. ?1: ? > 0.3; ? = 0.01 b. ?1: ? < 0.35;…

A: Given that a. H1: μ&gt; 0.3; ? = 0.01b. H1: μ&lt; 0.35; ? = 0.05c. H1: μ≠ 0.5; ?= 0.10

Q: Confidence Intervals Statistics    Assume random samples from normal populations with known…

A:

Q: sample subjects medium lead levels in their study done with high lead levels. Assume that the two…

A: Solution: Population 1 :Subjects with medium lead levels  Population2: Subjects with high lead…

Q: Suppose you wanted to know if there was a relationship between time spent on the internet and IQ.…

A: In the given situation, We are identifying the relationship between time spent on the internet and…

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

A: We have given that  Within 1% of sigma. 99% confidence level.

Q: 6.20 Mean OC in young women. Refer to the previous exercise. A biomarker for bone formation measured…

A: Given information Sample size n = 31 Sample mean x̅ = 33.4 ng/ml Population standard deviation σ =…

Q: Question 7 Which of the following is true of probabilities? O A probability varies from 0 to 1.0. O…

A: we have to identify true statement about probabilities.

Q: Die A has 4 red and 2 white faces, whereas die B has 2 red and 4 white faces. A coin is flipped…

A: Given that: Die A: It contains 4 red and 2 white faces. Die B: It contains 2 red and 4 white faces.…

Q: Test the claim that mean price of a cup of coffee is not equal to $3.59 using a 5 % significance le…

A: From the given information, The claim of the situation is mean price of a cup of coffee is not equal…

Q: A community health plan researcher wishes to estimate the mean number of visits per plan participant…

A: Suppose μ is the population mean number of visits per plan participant in a year.

Q: The arrows can only be dragged to z scores that are accurate to 1 place after the decimal point…

A: we have to sketch the region corresponding to  P(Z&gt;-0.6)

Q: The test statistic of z=2.18 is obtained when testing the claim that p>0.7. a. Identify the…

A: Given information- Population proportion, p = 0.7 Significance level, α = 0.05 Test statistics, Z =…

Q: A researcher wants to know if a treatment significantly increases the well being of someone with…

A: The sample size is 25 and sample mean is 7.7. The population mean is 7.2 and population SD is 1.4.

Q: Student loan debt is the only form of consumer debt that has grown since the peak of consumer debt…

A: Given that Student loan debt is the only form of consumer debt that has grown since the peak of…

Q: SAME DATA FROM PREVIOUS QUESTION: On a standardized test of mathematical ability, Kim scored a 40…

A:

Q: Suppose the average annual in state tuition and required fees for a public 4-year institutions…

A: K

Q: Suppose the mean income OR Firms in the industry for a year is as milion dollars with a Standard…

A: given data normal distribution μ = 95σ = 5P(x&lt;100)= ?

Q: The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally…

A: Using t test statistic because the sample is less than 30 and population standard deviation is…

Q: 9.19 Let Y₁, Y2, ..., Y, denote a random sample from the probability density function ƒ0) = {0,0…

A:

Q: A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of…

A: From the provided information, A recent survey found that 70% of all adults over 50 wear glasses for…

Q: The random variable x represents the number of boys in a family of three children. Assuming that…

A: Answer; - Given a probability distribution                 x P(x) x*P(x) x^2*P(x) 0 0.125 0 0…