A high school principal claims that the variance in the GPA of students in the graduating class is Tess than 0.39. You test this claim by sampling 31 seniors and find their GPA have a variance of 0.21. 8. Ho:0? Ha:o2 < 0.39 (Claim) = 0.39 Is there enough evidence to reject Ho and support the principal's claim at a 0.10 level of significance? A. No, the test statistic x2 = 20.599 is not in the rejection region with critical value 21.434 B. No, the test statistic x2 = 16.154 is not in the rejection region with critical value 40.256 C. Yes, the test statistic x? D. No, the test statistic x2 = 21.434 is not in the rejection region with critical value 20.599 E. Yes, the test statistic x² = 16.154 is in the rejection region with critical value 20.599 = 20.599 is in the rejection region with critical value 16.154 %3D

Q: In a test of H0: μ = 11 against HA: μ < 11, the sample data with sample size 25 from a normal…

A: We have to find np value for given data..

Q: The CEO of an airport hypothesizes that the variance in the number of passengers for American…

A: The data represents the millions of passengers per year in American airports and Foreign airports.…

Q: Were the two laboratories measuring the same thing? (Assume normality and common variance.) Be sure…

A:

Q: (a) Use the 0.02 level of significance to test the hypothesis whether it is reasonable to assume…

A:

Q: The sugar content of the syrup in canned peaches is normally distributed, and the variance is…

A:

Q: A high school principal claims that the variance in the GPA of students in the graduating class iS…

A: We have given that,  Sample variance (s^2) = 0.21 Population variance (σ^2) = 0.39 Sample size (n) =…

Q: Suppose X has finite variance. Let Y = |X|. Does Y have the same, a smaller, or a larger variance…

A: Given that X has finite variance i.e. var(x)&lt;∞ Let Y =|X| that means Y can take 2 values i.e. X…

Q: An athletics coordinator collected the 100-meter sprint times for 15-year old students at Ryde…

A: Introduction: Denote X as the time taken to complete the 100-meter sprint by a randomly chosen…

Q: A sample of 12 scores has a variance of s2 = 48. What is the estimated standard error for the sample…

A:

Q: An independent-measures research study compares two treatment conditions with n = 12 participants in…

A: State the hypotheses. That is, there is no significant difference between the treatments. That is,…

Q: The scores on a placement test given to college freshmen for the past five years are approximately…

A:

Q: A sample of n = 26 scores has SS = 125. What is the variance for this sample ?

A: According to the given information, we have SS = 125 n = 26

Q: Consider the following data related to the discrete random variable X: x 7 82 49 P(x)…

A: Given, Probability distribution of random variable X. We have to find out the variance of X, i.e…

Q: In a previous year, 52% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Given that, x=393,n=750,p0=0.52 Because np01-p0=750×0.52×(1-0.52)=187.2&gt;10, the sample size is…

Q: or the Analysis of Variance (ANOVA), which of the following correctly lists the alternative…

A:

Q: In a correlated design (for ANOVA), which part of the variance is removed from F?   a. Variance…

A: ANOVA compares means of more than 2 population. The one of the assumption of ANOVA is homogeneity of…

Q: n engineer asserts that Battery A outperforms Battery B in terms of overall performance. Type A and…

A:

Q: A soft-drink dispensing machine is said to be out of control if the variance of the contents exceeds…

A: Q-7

Q: |A study includes the accompanying data on compression strength (lb) for a sample of 12-oz aluminum…

A: From the provided information,

Q: Perform an analysis of variance and test the hypothesis, at the 0.05 level of significance, that…

A: 4. The data shows the concentration of chlorophyll for 3 stations for a period of 12 months.

Q: Given a non-normal population with a variance of 49 and mean of 3. If the size of a sample is n =…

A: We have given that  Variance =49 , mean= 3 Sample size = 81 Then standard deviation = sqrt(…

Q: A collar manufacturer is considering the production of ew type of collar to attract young men. The…

A: We have given that,  X:- 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 f :-   4       19    30    63…

Q: A recent article reported “A one-way analysis of variance found that GRE scores varied according to…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: For a sample of n = 11 scores with SS = 440. What is the sample variance and the estimated standard…

A: Sample  Variance s2 = SS/n-1 Estimated standard error sM = s/sqrt(n).

Q: The quality control department of a soup brand is concerned that its soups contain more MSG than the…

A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…

Q: The MINITAB analysis uses the pooled estimate of a?. Is the assumption of equal variances…

A: Given that For light water, SD = 0.403 For light oil, SD = 0.668

Q: The data from Medicine and Science in Sports and Exercise considered ice hockey player performance…

A: Given that: Sample size (n} = 17 Sample standard deviation = 0.09 seconds Population standard…

Q: The table to the right shows the cost per ounce (in dollars) for a random sample of toothpastes…

A: ( b ) d.f N is = ? d.f D is = ? The  critical value = ? The rejection region is ?

Q: An independent-measures study produces sample means of M1 = 20 and M2 = 17. If both samples have n =…

A: The formula to obtain the Cohens’d formula is,

Q: According to a certain government agency for a large country, the proportion of fatal traffic…

A:

Q: The next seven questions refer to the following scenario: A random sample of 16 Porsche drivers…

A: For the given data df =?

Q: This is used to determine the probability of an event by transforming the mean of the sample to a…

A: Let X be the random variable and sample standard deviation (s) and population variance unknown and…

Q: A random sample of size 29 from a normal distribution has variance s² = 24. Test H0 : σ² ≥ 30 versus…

A: A random sample of size 29 from a normal distribution has variance s2=24. The test hypotheses are…

Q: A medical researcher wishes to see whether the variance of the heart rates (in beats per minute) of…

A: It is given that the variance of the heart rates of smokers is 32 and the variance of the heart…

Q: "Dr. Broadus found a significant effect of alcohol consuption on dance partner attractiveness…

A: (25)

Q: A sample of n = 9 scores has a variance of s2 = 36. What is the estimated standard error for the…

A: Estimated standard Error of Mean =    Given, n=9 S2=36 Therefore substitute n,S2   in above…

Q: Which of the following scatterplots provides evidence that the condition of equal variance for…

A: One of the basic assumptions of the CLRM is that σ2 of each disturbance term conditional on the…

Q: The quality control department of a soup brand is concerned that its soups contain more MSG than the…

A: Given: Sample size, n = 21             Sample mean, M = 707             Sample variance, s2 =…

Q: following results. Do the populations have different variances at 5% level of significance?

A:

Q: | (0²) is o² = ( ▼ )/([ An unbiased, observable estimator of the variance of the error term |).

A: We know that the formula for unbiased variance of the estimator is given by the following formula :…

Q: A survey was conducted to compare the mean cost of a meal at fast food restaurants in two different…

A:

Q: The assumption of homogeneity of variances was tested, and the Levene’s test yielded a value of (p =…

A: The hypothesis to be tested here is- H0:σ12=σ22=σ32=.....=σk2 Homogenity of varianceH1:σi2≠σj2 For…

Q: When subjects were treated with a drug, their systolic blood pressure readings (in mm Hg) were…

A: From the provided information, Sample size (n) = 12 Level of significance (α) = 0.05

Q: on the PGA Tour (the men's professional golf tour)? A sample of 20 tournament scores from LPGA…

A: Given s12=2.21182 s22=2.46232 n1=30 n2=20 Where, s is sample standard deviation and n is sample…

Q: A researcher conducts an independent-measures study comparing two treatments and reports the t…

A:

Q: sample with SS=30 and a variance of s2 =10 has n=4 scores. True or False?

A: Given that  Sum of squares (SS) = 30 Variance ( s2) = 10 Sample size (n) = 4   We know that…

Q: Two samples of sizes 24 and 35 are independently drawn from two normal populations, where the…

A: The sample sizes for sample 1 and sample 2 are, Consider that the variances are equal The formula…

Q: Each year 7% of the world tiger population is killed by poachers. Now that there is a campaign to…

A: Null p =0.07 Alternative p&gt;0.07

Q: Given below are the analysis of variance results from a Minitab display. Assume that you want to use…

A: Given:: The output of minitab is shown below Source DF SS MS F p Factor 3 13.500 4.500 5.17…