A survey asked a random sample students if they estimated they spent more or less than an hour a day on social media. How many students estimated they spend less than an hour a day on social media?

Q: The McGranger Mortgage Company is interested in monitoring the performance of the mortgage process.…

A: Process capability Index: The relationship between the length of the acceptance interval and six…

Q: (a) Calculate the mean and standard deviation. (Round your mean value to 2 decimal places and…

A: Given that  Probability distribution function.  x       0    1    2    3   4   5       Total P(x)…

Q: Number of Alarms 32

A: Given,

Q: Weights of Newborn Babies 8.3 6.5 6.0 6.0 5.4 6.7 6.5 8.1 9.2 6.4 8.0 8.7 9.3 8.0 6.8 9.0

A: Arrange the given data in ascending order5.4 , 6.0, 6.4, 6.5, 6.5, 6.7, 6.8,8.0, 8.0, 8.1, 8.3, 8.7,…

Q: Use technology to help you test the claim about the population mean, μ, at the given level of…

A: We will provide you the solution in next step

Q: Sales at a fast-food restaurant average $6,000 per day. The restaurant decided to introduce an…

A: GivenMean(x)=6300standard deviation(σ)=1000sample size(n)=49sinificance level(α)=0.05

Q: Total 155 345 Total 500 Compute the relative frequency of the given event if an author as specified…

A: Given data table..  We have to find out given probability

Q: Which of the following statement is INCORRECT about the reason for running a two-samples t-test…

A: ans : c. The two-samples t-test is methodologically more sound and valid than the one-sample…

Q: Census data shows that a certain city contains close to a million families, and that these families…

A: Given: μ=2.1σ=0.9 The proportion of families having no children, p is 0.18 Sample size, n is 100

Q: Let p denote the population proportion of the University of lowa students who support the creation…

A: Given Information: Null Hypothesis H0:p=0.5 Alternative Hypothesis HA:p>0.5 Sample size n=200 The…

Q: Find the equation of the regression line for the given data. Then construct a scatter plot of Then…

A: Given: x y 150 430 170 480 130 320 130 380 80 250 190 510

Q: A PhD student in the sociology department tries to construct a 99% confidence interval for the…

A: The question is about sample size estimation Given : Confidence level = 0.99 Margin of error ( E ) =…

Q: A financial analyst is examining the relationship between stock prices and earnings per share. She…

A:

Q: The following data represent the pH of rain for a random sample of rain dates. A normal probability…

A: Given data is5.58,5.72,4.99,4.80,5.02,4.59,4.74,5.19,5.34,4.76,4.56,5.71sample size(n)=12

Q: The data summarized in the accompanying table is from a paper. Suppose that the data resulted from…

A: Solution: The observed frequency table is    Usually eat 3 meals per day  Rarely Eat 3 meals per…

Q: Sum of a pair of die 2 3 4 5 6 7 8 9 No. of appearances 5 7 1 8 1 2 6 10 8 11 7 12 1 In a game of…

A:

Q: The following table shows the results of a survey of 400 authors by a publishing company. New…

A:

Q: Which of the following statement is INCORRECT about the reason for running a two-samples t-test…

A: Answer is in step 2

Q: Assume that the height of AUM male students are normally distributed with a mean of 165 cm and a…

A: As per our guidelines I can solve only first 3 subparts. Post the remaining subparts again and…

Q: The drug fentanyl, and many of its derivatives, have become a major concern due to their ease of…

A: Given : Sample Size (n) = 5 Sample mean of lab's method (X¯) = 36.4 ng/mL Sample SD (S) = 0.7 ng/mL…

Q: Find the mean, median, and mode of the following data. If necessary, round to one more decimal place…

A: Given data is…

Q: Identifying the Method of Analysis Identify the method of analysis needed to answer the question.…

A: The researcher wants to determine whether there is a difference in the typical length of time…

Q: ress the confidence interval (30%,43.2%)(30%,43.2%) in the form of ˆp±MEp^±ME. ___% ± ___%

A: Given Confidence interval is (30%,43.2%)Lower limit=30%Upper limit=43.2%Express in form of p±E

Q: Beth wants to determine a 99% confidence interval for the true proportion of high school students in…

A: Suppose p is the true proportion of high school students in that area who attend their home…

Q: Do men take less time than women to get out of bed in the morning? The 60 men observed averaged 4.9…

A:

Q: A researcher wishes to examine the relationship between years of schooling completed and the number…

A: Given data y^=4-2x

Q: The following data related the rubber percentage of two types of rubber plants, where the sample…

A: We state the hypothesis for testing the difference of means.  H0: There is no difference between…

Q: Suppose you wanted to test whether there was any difference between the average age of husbands and…

A: “Since you have posted multiple questions, we will solve first  questionfor you. To get the…

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…

A: We have given that Population mean (µ) = 13Standard deviations (σ) = 2Sample size (n) = 34Sample…

Q: Construct a 99​% confidence interval of the population proportion using the given information.…

A:

Q: z score and p value I have my work above

A: your sample proportions are wrong From given data we have: n1=354+315=669n2=363+272=635x1=354x2=363

Q: Engineers want to design seats in commercial aircraft so that they are wide enough to fit 90​% of…

A: The mean is 14.1 and the standard deviation is 0.9.

Q: Determine (a) the x² test statistic, (b) the degrees of freedom, (c) the critical value using a =…

A: Given Level of significance ɑ=0.05  Note: According to Bartleby guidelines expert solve only one…

Q: The following data were obtained in a study of the relationship between the weight and chest size of…

A: Given data: Weight Chest size 2.75 29.5 2.15 26.3 4.41 32.2 5.52 36.5 3.21 27.2 4.32…

Q: Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

A: Given that Sample size (n)=2255 The number of US adults use internet regularly=1787 The number of US…

Q: data below shows the scores a sample of husbands and their wives received when given a happiness…

A: Given data, X Y X*Y X*X 50 60 3000 2500 65 55 3575 4225 72 60 4320 5184 18 25 450 324…

Q: Construct a 95​% confidence interval of the population proportion using the given information.…

A:

Q: (a) State the null and alternative hypotheses. OA. Ho: HCars = Hvans OB. Ho: HCars = HVans SUVs and…

A: By using  EXCEL, data - data analysis - ANOVA single factor ANOVA           Source DF SS MS…

Q: A certain type of candy is reported to be distributed with the color percentages shown in the table…

A: For the given data Perform Chi square goodness of fit

Q: Calculate coefficient of correlation r between the marks in statistics (X) and Accountancy (Y) of 10…

A: From the given data we make the following table to compute coefficient of correlation r between the…

Q: Tire wear: An automobile manufacturer wants to compare the lifetimes of two brands of tires. She…

A: Suppose μd is the difference of mean lifetime o Brand A and Brand B tires.

Q: The mean and standard deviation for the final exam in Dr. Fudd's class were as follows: mean = 86…

A: Concept: Z is known as standard normal variable Z= (X-mean)/standard deviation

Q: A researcher studied the relationship between the number of times a certain species of cricket will…

A: Regression line are used to predict the future value. It has two variables, they are independent and…

Q: If n=30, ¯xx¯(x-bar)=49, and s=4, find the margin of error at a 99% confidence level Give your…

A: Given,n=30x¯=49s=4degrees of freedom(df)=n-1df=30-1=29α=1-0.99=0.01α2=0.005t0.005(29)=2.756…

Q: The recidivism rate for convicted sex offenders is 11%. A warden suspects that this percent is…

A:

Q: For which of the x-values should you NOT attempt to estimate the y because of extrapolation? 0 20…

A: Given scatter plot The 6 data points given in the scatter plot…

Q: The number of tickets purchased by an individual for Beckham College’s holiday music festival is a…

A:

Q: (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho :O H₁ :0 (b) Determine the…

A: Given: Sample size, n is 13 Sample mean, x¯=120 Sample standard deviation, s is 11 α=0.10

Q: The data below shows the scores a sample of husbands and their wives received when given a happiness…

A: Consider the preliminary calculations given below:

Q: 1) Let the probability function of a discrete random variable X be >= {(²9) f(x) = (0.5)*(0.5)16-x,…

A: