The store manager of one university bookstore has tested two types of point-of-purchase displays for its new erasable pen. A shelf display was placed in a random sample of 20 stalls, and a floor display was placed in 15 other stalls in the area. The mean number of pens sold per stall in one month was 45 at 0.10 significance level, was there a significant difference between sales with the two types of displays if the standard deviation in general recorded to be 7.

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: The objective of this question is to test the claim that there is a significant difference between…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: An article in the local paper about salaries showed that staff nurses in San Antonio earn less than…

A: From the provided information, Level of significance = 0.01

Q: A national grocery store chain wants to test the difference in the average weight of turkeys sold in…

A: Given data: Significance level = 0.01 Claim : at 1% level of significance to determine whether there…

Q: The historical reports from two major networks showed that the mean number of commercials aired…

A: There are two independent samples which are first station and second station. We have to test…

Q: If the distribution of the population is bimodal, then the sampling distribution for the sample…

A: Bimodal means the distribution which has two peaks. Using central limit theorem, the sampling…

Q: What cutoff score(s) should be used? ±3.356   ±2.447   ±3.708   +1.943

A: The degrees of freedom is, df=n1+n2-2=4+4-2=6 The degrees of freedom is 6.

Q: A researcher is interested in examining the effect of emotions on those that are convicted of a…

A: Group 1(violent offenders): n1=34x¯1=33.5s1=3.5 Group 2(non-violent offenders): n2=25x¯2=35s2=3…

Q: O 0.0226 O 0.4885 O 0.5115 O 0.15 O 0.0113

A: Sample mean, Standard deviation, s= 5degrees of freedom, df= 80-1=79The null and alternative…

Q: Vermont-based Green Mountain Coffee Roasters dominates the market for single-serve coffee in the…

A: Note: As per my policy i can answer only one question. kindly repost the remaining question.Given…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Sample mean (x̅1) = 42.8Sample mean (x̅2) = 40.9Sample size (n1) = 34Sample size (n2) = 41Standard…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: The objective of this question is to test the claim that there is a significant difference between…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: Given Data : For Sample 1 x̄1 = 18.3 s1 = 1.8 n1 = 10 For Sample 2…

Q: Dr. Vegapunk thinks that watching anime (Japanese animated shows) decreases social skills in college…

A:

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Solution

Q: The class that graduated from a college four years ago took an average of 2.3 science courses. Since…

A: Since you have posted a question with multiple subparts we will solve, first three subparts for you.…

Q: Researchers from a certain country were interested in how characteristics of the spleen of residents…

A: Given that n1=93, x¯1=11.1, s1=0.9, n2=107, x¯2=9.9, s2=0.8, α=0.01.

Q: Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three…

A: It is given thatFor sample 1:n1=13,x1¯=23.9,s1=1.9n2=6,x2¯=24.7,s2=1.6α=0.01

Q: stration 10.24. A sample of 10 numbers gave a mean of 13 and a variance of 4. Later it was…

A: Central tendency measure the average of the data set. Dispersion measures the deviation of data set…

Q: university in England and each student in a random sample of 38 female students from the same…

A: The following information has been provided: For Males : Sample Mean 1 (Xˉ1)(\bar X_1)= 282282…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: Given : Claim : The mean number of customers who make a purchase in the store is lower for days…

Q: (a). The null and alternative hypotheses are O Ho:ã = 2.3 Ha: + 2.3 Ο H0: μ = 2.8 На: д < 2.8 Ο Ηρ:…

A: Here given  sample statistics  And significance level 0.05

Q: Dr. Vegapunk thinks that watching anime (Japanese animated shows) decreases social skills in college…

A: Dr. Vegapunk thinks that watching anime (Japanese animated shows) decreases social skills in college…

Q: We are trying to test whether, a new low fat diet actually helps obese people lose weight. 150…

A: Solution: Hypothesis testing:   From the above hypothesis test we can conclude that the low fat…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: The heights of 36 randomly selected horse jockeys found that the average height was 61 inches with a…

A: Given: Sample size of horse jockeys (n) = 36 Sample mean height x¯=61 Sample standard deviation of…

Q: A medical investigation claims that the average number of infections per week at a hospital in Town…

A: Solution-: Given: x¯=17.7,μ0=16.3,n=40,s=1.8,α=0.05 Claim: The average number of infections per week…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Given data,n1=40x1=46.6σ1=4.6n2=45x2=48.8σ2=2.4Compute value of test statistic?

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: A study was conducted to evaluate the stress level of senior business students at a particular…

A:

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Let be the group runners training for marathons be population 1 and       be the  individual…

Q: Company-owned Kentucky Fried Chicken restaurants in the United States have been reported as…

A:

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The sample size for no advertising group is 13, sample mean is 23.8 and sample standard deviation is…

Q: In a test of the effectiveness of garlic for lowering​ cholesterol, 49 subjects were treated with…

A: Given Information: Sample size n=49 Mean of the differences d¯=0.3 (sample mean) Standard deviation…

Q: s = $7.61. At 1% significance level, do the data provide sufficient evidence to conclude that this…

A: HERE GIVEN, A company collects information about retail prices of history books. During the year…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: From the provided information,

Q: Location is known to affect the number, of a particular item, sold by HEB Pantry. Two different…

A: given data x¯1  =  39s1 = 9n1 = 18x¯2  = 55s2 = 6n2 = 18α = 0.01claim : μ1 &gt; μ2

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A:

Q: Are low-fat diets or low-carb diets more effective for weight loss? A sample of 61 subjects went on…

A: given data x¯1  = 2.1s1 = 4.71n1 = 61x¯2 =3.7s2 = 5.67n2 = 63α = 0.05claim : μ1 &lt; μ2

Q: Researchers from a certain country were interested in how characteristics of the spleen of residents…

A: That is, there is no evidence to conclude that there is a difference exists in the mean spleen…

Q: A study was being done at our District to see who takes more units per semester, students at Cypress…

A: We have given that , Mean1 = 13.1 and Mean2 = 11.6 , Sd1 = 2.4 and Sd2 = 3.7 , Sample size1 = 60 and…

Q: Many cheeses are produced in the shape of a wheel. Because of the differences in consistency between…

A:

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: The objective of this question is to test the claim that there is a significant difference between…

Q: When the manager performed a significance test, the P-value was 0.07. What is the meaning of this…

A: P-value is defined as the probability of getting the difference at least as extreme as we are…

Q: Dean Halverson recently read that full-time college students study 20 hours each week. She decides…

A: The objective of this question is to find the p-value for the hypothesis test that the average study…