Blue Box is testing a new “half price on Tuesday” policy on DVD rentals at a sample of 10 locations.   Location New Price Old Price 1   15     11   2   11     7   3   13     10   4   13     14   5   10     9   6   12     15   7   12     13   8   11     7   9   13     12   10   12     9      Click here for the Excel Data File   (a-1) Choose the right option for H0:μd ≤ 0; H1:μd> 0. Use α = .05.   Reject if tcalc < 1.833 Reject if tcalc > 1.833   (a-2) Calculate the value of tcalc. (Round your answer to 2 decimal places.)   tcalc             (b-1) Is the decision close? (Round your answer to 4 decimal places.)   The decision is   (Click to select)   not close   close    The p-value is  .

Q: With a = .05 the two-tailed critical region for at test using a sample of n = 16 subjects would have…

A: From the given information,   Level of significance = 0.05 Sample size = 16   The objective is to…

Q: To test Ho.-100 Versus Hi mple fandom sample size o ned irom population hat is khIown to be nomaily…

A: Given: n= 25.0 ,x̄= 104.3 ,s= 9.0 µ= 100.0 ,significance level(∝)= 0.01 ,degree of freedom= 24.0…

Q: A random sample of size 12 from a normal population has a mean of x-bar = 52.8 and s = 2.53. If you…

A:

Q: A researcher is conducting an experiment to evaluate a treatment that is expected to increase the…

A: Solution

Q: A random sample of size 16 and mean 30 was selected from normal distribution if we want to test that…

A: Given that, sample size n=16 mean =30 population variance σ2=25 Level of significance α=0.05 The…

Q: The following data represent the results from an independent-measures study comparing two treatment…

A: Given : Data represent the results from an indepdently measure study comparing two treatment…

Q: A university is interested in promoting graduates of its honors program by establishing that the…

A: It is given that the level of significance is 0.025.

Q: Conduct a test (at an alpha of .05) to answer whether or not San Angelonian’s salary is…

A:

Q: A botanist suspects the mean germination time of a new variety of bean is more than 48 hours. The…

A: From the output, 1. Parameter: population mean(μ) 2) Null Hypothesis: H0:μ=48 3) H1:μ&gt;48

Q: Much concern has been expressed regarding the practice of using nitrates as meat preservatives. In…

A: Given data is 7252,6872,9637,6864,9099,5841,8953,7975,7069,7499,7888,8175,7529,8729,7465sample…

Q: Arandom sample of 450 observations produced a sample proportion equal to 0.38. Find the critical and…

A:

Q: Samples are collected from the River X and pH values are observed. 9 different pH values are listed…

A: Introduction: The formula for Bowley’s coefficient of skewness is: SkB = (Q3 –2Q2 + Q1) / (Q3 – Q1).…

Q: The following data come from independent samples drawn from normally distributed populations. Use…

A:

Q: Suppose we want to test Ho: p>.7 H: p<.7 based on a sample of size 10. (a) Find the critical region…

A: Solution: Given information:   n= 10 Sample size x= 5 succeses p^=xn=510=0.5 Sample proportion p=…

Q: A sample of n=38n=38 data values randomly collected from a normally distributed population has…

A: From the given situation, Null Hypothesis: H0:σ2=11.9 Alternative Hypothesis: H1:σ2≠11.9 Given…

Q: s distributed N(µ, o²) and HO: o? = 64 versus Hl: o2 < 64 is to be tested at level a = 0.10, then he…

A: We have given that  Sample size n=20 ,  sigma^2=64 , standard deviation s= 3

Q: I1, in a sample of n 25 selected from a normal population, X=51 and S=5, what are the critical…

A:

Q: ********************** 27. Which of the following is (are) TRUE if the test on the linear dependence…

A: given data  Which of the following is (are) TRUE if the test on the linear dependence of Y on X…

Q: Q4. A manufacturer is testing two different vaccum pump designs. In a controlled test he got the…

A: We are given 2 samples Pump 1 and Pump 2.  Here, our null hypothesis will be that, the median PSI of…

Q: Condition 1 Condition 2 Condition 3 14 21 14 15 9 24 20 15 16 14 11 15 ΣΧ25130 17 15 15 17 19 14…

A: The following information has been provided:   Condition 1 Condition 2 Condition 3   14 21 14…

Q: You wish to test the following claim (H.) at a significance level of a = 0.10. T1 = In1:°H T1 > Irt…

A: Vgummnfh

Q: process that is in control has a mean of u = 14.5 and a standard deviation of o = 0.6. (a) Compute…

A: The X -bar chart  is a type of SHEWART control chart  that is used to monitor the arithmetic means…

Q: To test H0​: μ=40 versus H1​: μ<40​, a random sample of size n=26 is obtained from a population that…

A: Test statistic formula is

Q: A random sample of size 20 from a normal population has a mean of x-bar = 62.8 and s = 3.55. If you…

A: We have given that the random sample of size 20 from a normal distribution has mean 62.8 and…

Q: An investigator wants to test the claim that there is no difference of a new weight loss medication…

A: If the data is paired, then to compare the means the paired t-test is used. This test uses the…

Q: A random sample from a population of X with unknown mean but a known variance, o = 400, gives the…

A: b. Given information: σ2=400n=125∑xi=1750 i) Point estimate of the population mean, μ: The point…

Q: 1. An investigator wants to test if there is a difference in endotoxin levels in children who are…

A:

Q: To test the null hypothesis that the population mean is not bigger than 30 at the ten percent level…

A: Solution: Given information: n= 89 Sample size  x= 32 Sample variance s2= 64 Sample variance μ= 30…

Q: Refer to Table S6.1 - Factors for Computing Control Chart Limits (3 sigma) for this problem.…

A:

Q: Find the t value that forms the boundary of the critical region in the right-hand tail for a…

A: Given, alpha = .01

Q: To test Ho: H = 100 versus H,:µ# 100, a simple random sample size of n = 22 is obtained from a…

A: We want to tell you which one is the correct choice.

Q: In an experiment to compare the tensile strengths of I = 6 different types of copper wire, J = 5…

A: From the provided information, MSTr = 2654.3 MSE = 1154.2 The hypotheses are as follow: H0: µ1 = µ2…

Q: Find the critical value t alpha/2. 99%; n=17; standard deviation is unknown; population appears to…

A: Tail = Two-tailed   alpha = 0.01 n = 17   Degree of freedom  df = n-1  df = 17-1 = 16

Q: Suppose that x has a beta distribution with parameters a = 2.8 and B = 1. Determine to 4 decimal…

A:

Q: Using an alpha value of .01, for a two-tailed test, what critical value do I find in Appendix B?

A: The degrees of freedom is, The level of significance is 0.01. Use the t distribution table to…

Q: In each of the following problems (a) state, the null and the alternative hypothesis (b) compute the…

A: Given  mu=70, Xbar=65, n=20, s=3 We want to find the hypothesis and test statistic and critical…

Q: A sample of n=39n=39 data values randomly collected from a normally distributed population has…

A:

Q: I II III 6 8 10 5 5 5 1 2 3 0 1 2  G=48 ΣX2 = 294 T I=12 TII= 16 TIII= 20 SS=526 SSII=530…

A: For an independent measures study, following data is given: I II III   6 8 10 G=48…

Q: Calculate the average values of the Cp and Cpk capabil-ity indices for the BOD data , assuming that…

A: The value cp and cpk is a well known capability indices value which used to understand the…

Q: You need to test whether the average mealtime spending of American tourists​ (population 1) is…

A:

Q: R COMMANDER OUTPUT R COMMANDER OUTPUT meat = chicken 32 o 38 o Shapiro-Wilk normality test data:…

A: Shapiro will test used for examining the normality of data hypothesis for shapiro wilk test H0: the…

Q: Find the critical z-value for the following hypothesis test. : μ-5 Hị : µ < 5 with a level of…

A:

Q: H〗_0 ∶p=0.70, 〖 H〗_a ∶p≠0.70 Sample size (n)= 150 Sample proportion=0.75 α= 0.05 a. Compute the…

A: Given Information: Sample size n=150 Sample proportion p^=0.75 Significance level α=0.05 Null…

Q: The following data represent the results from an independent-measures study comparing two treatment…

A: The data shows the two treatment results.

Q: d. t Critical Value (For two-tailed t, give e. f. Sample mean:

A: here the n =12 therefore the test follow t distribution with n-1 i.e 11 degrees of freedom t…

Q: The pressure of air (in MPa) entering a compressor is measured to be X = 8.5 ± 0.2, and the pressure…

A: Given that, The pressure of air (in MPa) entering a compressor is measured to be X = 8.5 ± 0.2, and…

Q: 2. The breakdown time (in minutes) of an insulating fluid between electrodes at 34 kV are reported…

A: Given that the data  are…

Q: The Board of Transportation and Safety (BTS) wants to examine the safety mechanisms of A, B, and…

A: Test Hypotheses: There are 3 types of cars. Denote the true average of the three types of cars A, B…

Q: In a series of tests (see data table below), 15 rolls of wrap are made under carefully controlled…

A: Solution: X (X-X) (X-X)2 134 2.066667 4.271111 131 -0.93333 0.871111 129 -2.93333 8.604444…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.