following confidence interval estimating the approval rating for a state's governor: 75% CI [34, 66].  What was the mean approval rating for the sample used?

Q: Ridgewood 26875 25885 San Francisco 35333 28999 Tulsa 16292 20836 QUESTION 10 In terms of resale…

A: Null Hypothesis: Resale is not significantly higher for remodeling the kitchen. Alternative…

Q: A new soft drink is being market tested. A sample of 400 individuals participated in the taste test…

A: p=33%, n=400, x=120

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: what would the mean and standard deviation of the sample proportion ˆp be?

A: Let X be Pennsylvanians who have a high school diploma Given, n = 225 p = 0.83

Q: A hospital found out that there is a higher incidence of food poisoning in adults than in children.…

A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…

Q: Find ^p and ^q. Round your answers to three decimal places. n=147and X=68

A: n=147and X=68

Q: An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for…

A: Range: For a set of observations, range is defined as the difference between the maximum and the…

Q: The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $…

A:

Q: O224 O 124 O238 176

A: GIVEN DATA, p=0.169CI=0.90α=1-0.90=0.10E=0.04

Q: A computer magazine is evaluating the charge life of a new notebook computer battery.  As part of…

A: The type II error is the probability of fail to reject the null hypothesis when alternative…

Q: Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the…

A: a) Mean = 1.24 median = 0.57 There is heavy positive skewness in the data.

Q: The percentile 87 (Pg7) such that Pg7=78, means that: Select one: a. 13% of values are greater than…

A: A discrete variable is a variable whose value can be obtained by counting. A discrete variable is a…

Q: A local pasty company ran a taste test with 3 different pasty recipes. The study consisted of 60…

A: It is given that a taste test with 3 different pasty recipes from a local pasty company.

Q: Read the following study, construct the appropriate 2x2 table, calculate the measure of association,…

A: Consider the given study in which A statewide outbreak of E. coli O:157 is being investigated.…

Q: A shareholders group is lodging a protest against your company. The shareholders group claimed that…

A: Test - stats (t) = x¯-μsn

Q: An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for…

A: Given, The cost of repair for each of the four crashes is, {410, 452, 401, 217} Here min value=217…

Q: Given that the total sample of an FDT is 432, and the relative frequency of one of the classes is…

A: Total total relative frequency is add up to 100%  Here the  relative frequency of one class is…

Q: A local steel pipe manufacturing company makes pipes. In a quality control assessment, a total of…

A: The value of D3 corresponding to sample size 4 is 0, and value of D4 corresponding to sample size 4…

Q: A manager wishes to build a 95%-level range chart for a process. The sample size of 10 samples is…

A: Average range, Sample size,

Q: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: The Null and Alternative Hypotheses is given by: H0: p0=0.80 H1: p0≠ 0.80 The sample proportion is…

Q: Three composition instructors recorded the number of spelling errors which their students made on a…

A:

Q: Which percentile would be used to find the multiplier for 60% confidence? Select one: a. 20th…

A: Given find the multiplier for 60% confidence

Q: In college age population 18-24, about 9.2% have hypertensuon. Suppose that a blood donor program.…

A:

Q: A hospital found out that there is a higher incident of food poisoning in adults than in children.…

A:

Q: In terms of resale value, is remodeling a kitchen worth the cost? The following cost and resale…

A: Here we have given that the cost and rescale values for 12 different cities.  Now solving the given…

Q: Close Confidants and Social Networking SitesA previous exercise introduced a study in which 2006…

A:

Q: Burgans Furniture has asked the Create America Advertising Agency to develop a new advertising…

A: Given information: The data on monthly sales before and during the advertising campaign is provided…

Q: A basketball player claims that the success of his shots is more than 70%. If this player scored 152…

A:

Q: Given the following: Disciplines Electronic Chemical Sample Size 9 11 Sum of Ranks 58.5 151.5…

A: Non parametric test are alternative for parametic test. In non parametric test are used when the…

Q: An online magazine article reported that US adults spend an average of $50 on birthday gifts for…

A: The smallest level of significance at which the null hypothesis is rejected is given by the p-value.

Q: A researcher wants to know whether athletic men are more flexible than nonathletic men. For this…

A: The given sample size for athletic men is 50, sample mean is 4.3, sample standard deviation is 2.1,…

Q: In terms of resale value, is remodeling a kitchen worth the cost? The following cost and resale…

A: Given Information: Significance level α=0.05 Assuming the differences (cost - resale) are normally…

Q: A teacher is experimenting with a new computer-based instruction and conducts a study to test its…

A: Solution  The teacher can use a two-sample t-test for comparing two population means in the…

Q: A software company is interested in improving customer satisfaction rate from the 50% currently…

A: The null and alternative hypothesis is defined as:

Q: In a study of brand recognition, 821 of the 849 subjects recognized the Campbell’s soup brand. Use…

A:

Q: In terms of resale value, is remodeling a kitchen worth the cost? The following cost and resale…

A: To test the required claim the appropriate hypothesis is as follows H0: μCost=μResaleH1:…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 32%. Given the…

A: Given P=32%=0.32 Sample size (n)=1820 X=532 Significance level=0.05

Q: Assume the managers have requested estimates of the mean attitudes towards each mall with a margin…

A: M.E= 0.05 Springdale Mean -3.81 Springdale STDEV - 1.06 West Mall Mean - 3.41 West Mall STDEV - 1.18…

Q: Three runs of an assay generate 72.49%, 72.99% and 72.40%. The average result needs to be accurate…

A:

Q: For an independent-samples t-test, what is the effect of increasing the number of scores in the…

A: Answer: For an independent samples t test, By increasing the number of scores in the samples will…

Q: for a normal population mean, if a sample of size 25, sample mean= 7.9 and SD= 4.9. Then The 95%…

A:

Q: A middle school wanted to examine if students' sense of school belongingness increased after…

A: It is wanted to be examined by the middle school whether the sense of school belongingness of…

Q: A community is considering raising funds to pay for improvements to the community swimming pool. To…

A: Here given community leader survey patrons of community pool on Saturday afternoon

Q: Violent crimes include​ rape, robbery,​ assault, and homicide. The following is a summary of the​…

A: Given, the following is a summary of the​ violent-crime rate​ (violent crimes per​ 100,000…

Q: Drug manufactures of Drug X, which was released on the market 5 years ago to treat Crohn’s disease,…

A: Given: 1 individual who developed the disease at the 1-year mark 3 individuals who developed the…

Q: An online bookseller is considering selling an e-reader but will do so only if they have evidence…

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.