9.13 Given a sample size of 36, how large does the population standard deviation have to be in order for the standard error to be A. 1? B. 2? C. 5?

Q: The two samples  whose statistics  are given in the table  come from populations that are normal…

A: Given that, sample size (n1)=10  , sample mean (X1) = 129.44 , standard deviation (s1)= 9 sample…

Q: ange = tandard deviation (8) = QR = (Please enter an exact answer.) new number, 207, is added to the…

A:

Q: A single data point has a(n) ____ chance of falling within plus and minus two standard deviations of…

A: Let , assume that an average and a standard deviation are calculated using a large number of…

Q: Which of the following is an appropriate test to compare a sample mean with a population mean when…

A: When the population deviation is unknown, we use student t-test So, Option d is correct. i.e. t-test

Q: Find the standard error,  t statics Sample variance = .67 Sample size = 30 Population  size = 60…

A: Given information- Sample variance, s2 = .67 So, sample standard deviation, s = 0.819 Sample size, n…

Q: The average weight of an elephant is 6.42 tons with a standard deviation of 1.07 tons. Use the…

A: Given that the average = 6.42 and standard deviation = 1.07   a) The mean=the average= 6.42

Q: The store manager took a random sample of 100 customers to determine whether or not the mean waiting…

A: What is the appropriate test to use for this problem? A. One sample z-test  What is the observed…

Q: A simple random sample of 5 months of sales data provided the following information: Month: 1 2…

A: a.It is needed to find the point estimate of the population mean number of units sold per month.

Q: When computing a 95% CI for a population mean, the ____ is used to compute the margin of error.…

A: When computing a 95% CI for a population we use two-tailed t value at 0.05.

Q: Given the set of numbers: {1, 4, 3, -4}, find their variance and standard deviation. [Hint: For…

A:

Q: What effect does the sample size have on the standard deviation of all possible sample means? A.…

A: Given data What effect does the sample size have on standard deviation of all possible sample means

Q: Two samples of scores on a survey are as follows: Sample A: 10 7 6 Sample B: 183 10 112 7 28. What…

A:

Q: 9. Answer parts a-d. What is the point estimate of the population mean? 8.38 .. Find the standard…

A: We have given that,  Sample size (n) = 532, mean (x̄) = 3.38 and standard deviation (s) = 1.9

Q: In the population of drivers, the mean number of traffic violations in the last 10 years is 5.2. In…

A: It is given that Population mean = 5.2 Sample mean = 4.25

Q: Two samples of scores on a survey are as follows: Sample A: 10 7 6 8|7 9 Sample B: 183 10|1|12 7 26.…

A:

Q: When a sample size from a population is n = 1, then the standard error will always equal the _____.…

A: Given that, Sample size, n = 1

Q: 10. Is it possible for the standard deviation of a list of numbers to equal zero? If so, give an…

A: Q10. Numbers can be repeated

Q: Which of the following is a correct statement? A The discrepancy between the sample and the…

A:

Q: A normal population has a mean 100 and variance 25. How large must the sample size be if we want the…

A:

Q: Intelligence quotas on two different tests are normally distributed. Test A has a mean of 100 and a…

A: Given: Test A: Mean,μ=100 and Standard deviation,S.D.=13            Test B: Mean,μ=100 and Standard…

Q: We need to have an SRS from the target population. ) All of the answer options are correct. We need…

A: The one sample z-test is a statistical technique that used to define whether a sample of data could…

Q: 36% of a population has a particular characteristic. If samples of size n=400 are taken, calculate…

A: Solution: From the given information, the probability of a particular characteristic is 0.36 and the…

Q: 2.Which of the following is not needed to compute a t statistic? a. A hypothesized value for the…

A:

Q: Go through the ten steps of analysis of variance hypothesis testing to see if you conclude that…

A: The data given in the question is: Y MA E 193.6 125.4 59 137.5 126.5 87.2 122 115.9 84.4…

Q: Intelligence quotas on two different tests are normally distributed. Test A has a mean of 100 and a…

A:

Q: 6. A manufacturer makes a particular car part that is supposed to have a mean weight of 30 g. An…

A: The claim is that the mean weight is less than 30 g.

Q: Use z scores to compare the given values. Baned on sample data, newbom males have weights with a…

A:

Q: A) What is the critical value for chi-square in this case (αα B) When calculating chi-square the…

A: given: n=80 here we have  α=0.05

Q: In a study of speed dating, female subjects were asked to rate the attractiveness of their male…

A: Range of a data set is the difference between the minimum and maximum observations.

Q: Consider two populations in the same state. Both populations are the same size (22,000). Population…

A: The following solution is provided below :

Q: Which of the following options correctly describes how to obtain the estimated standard error in a…

A: standard error formula is SE= sigma/√n

Q: What is the test statistic? (ž1 – 2) – (41 – µ2) Ot p - P (n – 1)² . s² OF Ox (71 – ī2) – (41 – µ2)…

A: From the given information, the claim of the problem is "no more than 1% of the cards are…

Q: a. What is the point estimate of the population mean? 3.38 b. Find the standard error of the sample…

A: The sample mean is 3.38.