Please answer the following using excel formula: a. A two-tailed test at a .0694 level of significance; the critical value, |z| = ? b. A right-tailed test at a .123 level of significance; the critical value, z = ? c. For the case where ? is unknown, a two-tailed test with a sample size of 20 at a .20 level of significance; t = ?

Q: Determine the P-value for a one-sided test with z = 1.89

A: here given , hypothesis test is one tail  test statistic  =  1.89  use excel command for p -value

Q: a. What is the mearn the original samples have n = 4 scores? b. What is the mean for the combined…

A: From provided information; one sample has a mean M1= 8 and second sample has mean M2=16, two samples…

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

A: Given: The number of samples is k=5. The number of observations in each sample is n=4. The provided…

Q: Find the Zc value for a 92% confident interval when the sample sizes 27

A:

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given: n= 1031 ,x= 545 need to find point estimation for p.

Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A:

Q: What is the p-value of a one-sided greater than One-Sample Z-Test for Mean where the z-statistic…

A: Denote p as the true population proportion.

Q: The 3rd quartile of the ages of 300 students of Math class is 22 years. Which of the following…

A:

Q: What is the p-value of a one-sided less than One-Sample Z-Test for Mean where the z-statistic equals…

A: We have to find correct option.

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A: n = 990 and x = 564 who said "yes." Use a 99% confidence level  We have to find confidence interval…

Q: the claim is that for a smartphone carriers data speeds at airports, the mean is 14.00Mbps. the…

A:

Q: The following data are the monthly salaries and the grade point averages for students who obtained a…

A: For the given data using Regression t test the hypotheses at 5% l.o.s

Q: The first quartile is a value that has __% of the observations below it. Is the answer 25%

A: The first quartile value is denoted by Q1. This value states that 25% of the observations are below…

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: As a quality control inspector, you have previously believed a claim that 3.2% of items made on your…

A: Given: Sample size (n) = 420 22 of the items are defective (x) = 22 The hypotheses can be…

Q: 2. 10% of all college students volunteer their time. Is the percentage of college students who are…

A: As per our guidelines, we can solve only the first three subparts, Kindly repost the others for…

Q: estimate of for the following. E = .17, ? = .90, confidence level = 99%

A: (1) We have given that,  Population proportion (p) = 0.90, margin of error (E) = 0.17 and…

Q: Please assist with question 4 and kindly show all workings. Thank you! In 2015, the average…

A: 4. The sample mean is obtained below: From the given information, 50 calls originating from the…

Q: In the formula for t, the "statistic" is the null hypothesis. the mean of all numbers. the…

A:

Q: For an acceptable quality level (AQL) of 1%, a lot tolerance proportion defective (LTPD) of 4% and a…

A: Given:-

Q: A software company is interested in improving customer satisfaction rate from the 70% currently…

A: Given-                       Hypothesized Population proportion (p0) = 70% = 0.70…

Q: A quality-control apprentice is preparing a CUSUM chart. The values calculated for SL and SH are…

A: We Know that, The Cumulative Sum of SL is always Negative and Zero. The Cumulative Sum of SH is…

Q: 52% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Solution: Given information: n= 231 Sample size  x= 129 success  p^=xn= 129231=0.5584   Sample…

Q: reporter has claimed that the majority of Colleges in the United States are Private For-Profit…

A:

Q: Decide whether the following scenarios are example of type 1 error or type 2 error or neither? Use…

A: Explanation: The investigator is specifically interested to test whether the mean weight of babies…

Q: Which chi-square test should be used on the following study? A psychotherapist wanted to see what…

A: The chi-square test of independence is known as the method that is used to define whether there is a…

Q: IOF 20 Fandomly selected sets of siblings. The 20 pairs of measurements yield x = 98.55, y= 96.1,…

A: Given y = 1.09 +0.96x, where x represents the IQ score of the younger child. x= 102 Use a…

Q: A software company is interested in improving customer satisfaction rate from the 74% currently…

A: Z-Test:  Here the hypothesis test is for the population proportion. The test statistics compared…

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: For which quartile , 25% observations are greater and 75% are smaller ? A. First quartile B Third…

A: It is an important part of statistics. It is widely used.

Q: A researcher gathered from historical papers that the proportion for the success of an event was…

A:

Q: Which has the greatest standard error?     mean=20, s.d.=10, n=9     mean=30, s.d.=15, n=16…

A:

Q: 879, P-vaIue Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs…

A: For the best predicted value, first we will see whether the two variables (x and y) are…

Q: Use the following summary to answer the items that follow: The intensive treatment group reported…

A: Given that Z statistic =3.75 Alpha=0.01

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: The mayoral challenger claims that less than 30% of residents over the age of 25 have bachelor’s…

A:

Q: Determine the sample​ proportion, p, of households that own a Company A product. b. If the…

A: Let , n=total number of households=56 Let , X= be the number of respondents said yes.=14 The…

Q: Find the estimated standard error for the sample mean for n = 8 and SS= 5042.

A: Given n=8, SS=5042

Q: A sample of 100 adult women was taken, and each was asked how many children she had. The results…

A: As per our guidelines we are suppose to answer only three sub parts. From the given data the no.of…

Q: Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of…

A:

Q: Use the given info to answer the question: Assume that the population average number of movies…

A: Note: " Since you have asked multiple questions, we will solve the first question for you. If you…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Given Data Sample Size, n = 992 Number of successes, x = 581.0 confidence level,c=…

Q: Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune…

A: Obtain the sample size of a preliminary estimate for p is 0.14.   The formula of sample size is,…

Q: As a quality control inspector, you have previously believed a claim that 3.2% of items made on your…

A: From the provided information, Sample size (n) = 420 22 of the items are defective that is x = 22…