7. What type of statistical test should be used when the population isapproximately normally distributed and the population standard deviationis unknown.O A. Z- testB. T-testO C. F-testO D. Test for proportion

When Population is normally distributed and population standard deviation is known we use the Z…

Answered: 7. What type of statistical test should…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

If the mean of the data 4, 6, 8, 5, 7, 10, 9 is 7, what is its standard deviation? A. 6.50 B. 10.00 C. 3.16
1. Commute the range for baseball coaches yearly salaries. 2. Compute the mean yearly salary. 4. Compute the variance and the standard deviation for the yearly salary. Show you calculation. 4. Compute the coefficient of the variation.
Which of the following is NOT a requirement of testing a claim about the mean of the differences from dependent samples? Choose the correct answer below. O A. The degrees of freedom aren- 2. O B. The samples are simple random samples. O C. The sample data are dependent. O D. Either the number of pairs of sample data is larger than 30 or the pairs have differences that are from a population having a distribution that is approximately normal, or both.
5. In a normal distribution of scores, four participants obtained the following deviation scores: -10, -1, 0, +4. a. Which of these is the highest raw score? How do you know? b. Which is the lowest raw score? How do you know? c. Did anyone obtain a score that was the same as the mean? Explain
Assume the birth weights at a local hospital have a normal distribution with a mean of 110 oz and a standard deviation of 15 oz. Draw a normal curve and label the mean and each value which is one, two, or three standard deviations above the mean. Then label each value which is one, two, or three standard deviations below the mean.
Suppose that the scores on a statewide standardized test are normally distributed with a mean of 65 and a standard deviation of 4. Estimate the percentage of scores that were a. between 53 and 77. ______% b. above 73. ______% c. below 53. ______% d. between 61 and 73. ______%
Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.10 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). a. Identify the test statistic. t equals (Round to two decimal places as needed.) b. Identify the P-value. P-value equals (Round to three decimal places as needed.)
D. Tell whether the distribution has a small or large variance E. Compute the actual variance and standard deviation
A. Population ? B. Population mean ? C. Median ? F. IQR ? G. Population standard deviation ?H. population variance ?
You want to know if a treated sample mean, M, is significantly different from some hypothesized mean, however, you do not have access to the popuation standard deviation, so you estimate it by computing the standard deviation of the sample. Which stats test do you run? a. z test for determining position of a score, x, in a population. b. one-sample t test. c. independent-samples t test. d. z test for determining the position of a mean, M, in a sampling distribution.
42. The speeds of vehicles on a certain part of a highway are normally distributed with a mean of 60 mph and a standard deviation of 6 mph. Use the Empirical Rule to answer the following questions. a. Approximately what percentage of vehicles travel at a speed between 54 mph and 66 mph? b. Approximately what percentage of vehicles travel at a speed greater than 72 mph? c. Approximately what percentage of vehicles travel at a speed not greater than 78 mph?
Data Set A has more variation than Data Set B. Decide which of the following statements are necessarily true. a. Data Set A has a larger mean than Data Set B.b. Data Set A has a larger standard deviation than Data Set B.

SEE MORE QUESTIONS

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

7. What type of statistical test should be used when the population is approximately normally distributed and the population standard deviation is unknown. O A. Z- test O B. T-test O C. F-test O D. Test for proportion