A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.07. Find the conclusion for the test at the 5% significance level.

Q: For a population with u = 34, a score of X = 31 corresponds to z = -1.00. The standard deviation for…

A:

Q: the average age of Kendall residents is not 49. The alternative hypothesis is H a: μ ≠ 49   Identify…

A: It is given that the alternative hypothesis. That is, Ha: µ ≠ 49.

Q: In a recent survey, 10 percent of the participants rated Pepsi as being "concerned with my health."…

A: Given :  p = 10% = 0.10 n = 400 x = 51

Q: If r = .20 and sy = 30.42, what is the standard error of the estimate?

A: given data r = 0.20Sy = 30.42standard error of the estimate = ?

Q: Calculate the true standard error. Your parameters are µ=18.6; ?? = 4.50; N=7. What does this value…

A: We have given that.   X~N( μ , ?^2 )   μ =18.6 , ? =4.50   , N=7

Q: The p-value for this test is approximately

A: Here Given for two tail test  Sample size=n=144 Sample mean=x¯=60.8 Standard deviation=s=3.6

Q: In a population distribution, a score of X 5 28 cor- responds to z  21.00 and a score of X  34 cor-…

A: Given: The z-score corresponding to X = 28 is -1.00. The z- score corresponding to X = 34 is -0.50.…

Q: Suppose the relationship between Y and X is given by: Y = 10 + 8.75*X + error  By how much does the…

A: The objective of the question is to find out the change in the expected value of Y when X increases…

Q: A group of students measures the free fall acceleration seven different times and reports the…

A: Let X be the free fall acceleration.Given, the data for X is 10, 10, 8.9, 9.8, 10.4, 9.9 and 10.6

Q: d) Find the probability that a photo shoot takes place between 5 and 10 hours. Find the Z value,…

A: Given Information: Mean μ=6.3 hours Standard deviation σ=4.5 hours To find the probability that a…

Q: A population of scores has µ=250, In this population, a score of X=300 corresponds to Z=+2.50. What…

A:

Q: Suppose the relationship between Y and X is given by: Y = 4 + 3.2*X + error  By how much does the…

A: The objective of the question is to find out the change in the expected value of Y when X increases…

Q: The test statistic of z = 0.96 is obtained when testing the claim that p > 0.4. b. Find the…

A: b. The test statistic of z = 0.96 is obtained when testing the claim that p > 0.4. That is, the…

Q: as rejected ct answer below ot sufficient evidence that the mean of the pressure required to open a…

A: According to the given information in this question , we need  to identify the correct option The…

Q: Calculate the standard score of the given X value, X=66.6, where μ=60.2 and σ=62. Round your answer…

A: We hvae to find standrad score for given data ..

Q: 5. A manufacturer of digital recorders claims the distribution of life of its recorders can be…

A: Let X1,X2,....,X64 be the samples from this population. Sample mean, X = 164∑i=164Xi Xi are normally…

Q: On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised…

A:

Q: A soft-drink machine can be regulated so that it discharges an average of u ounces per cup. If the…

A: standard deviation (σ) =0.2x=44

Q: was the result statistically signifigant

A:

Q: 6. It is known that the tensile strength of a plastic increases as a function of the time it is heat…

A:

Q: Beyond 120 df, t and z values are identical. Therefore, some statisticians opt to use z-values when…

A: Beyond 120 df, t and z values are identical. Therefore, some statisticians opt to use z-values when…

Q: Given that s.e.(b) = 61 and the estimate is 32, what is the t-stat?

A: GivenSEβ=61Estimate(β)=32

Q: A sample from a normal population with u=50 and o =6 has a mean of M =48.20.If the sample mean…

A: Given,mean(μ)=50standard deviation(σ)=6sample mean(M)=48.20z-score =-1.50

Q: In a study, a random sample of community college students was asked whether they bought fast food at…

A: The chi-square test was introduced by Karl Pearson for categorical data analysis and distribution.…

Q: Can you please explain more simply and numerically the calculation that arrives at the std deviation…

A: The probability distribution of strategies A and B is,Strategy AStrategy…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches.

A: Given that  adult men have heights with mean (μ) = 69 inches Standard deviation (σ) = 2.8 inches We…

Q: Suppose the relationship between Y and X is given by: Y = 4 + 3.2*X + error  By how much does the…

A: The objective of the question is to find out the change in the expected value of Y when X increases…