Question

A normal population has a mean of 78 and a standard deviation of 9. You select...

A normal population has a mean of 78 and a standard deviation of 9. You select a sample of 57. Use Appendix B.1 for the z-values.

Compute the probability that the sample mean is: (Round the z-values to 2 decimal places and the final answers to 4 decimal places.)

a. Less than 77.

Probability            

b. Between 77 and 79.

Probability            

c. Between 79 and 81.

Probability            

d. Greater than 81.

Probability            

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A normal population has a mean of 77 and a standard deviation of 5. You select...
A normal population has a mean of 77 and a standard deviation of 5. You select a sample of 48. Compute the probability that the sample mean is: (Round your z values to 2 decimal places and final answers to 4 decimal places.) A. less than 76 Probability: B. Between 76 and 78 Probability: C. Between 78 and 79 Probability: D. Greater than 79 Probability:
A normal population has a mean of 77 and a standard deviation of 8. You select...
A normal population has a mean of 77 and a standard deviation of 8. You select a sample of 36. Use Appendix B.1 for the z-values. Compute the probability that the sample mean is: (Round the z-values to 2 decimal places and the final answers to 4 decimal places.) a. Less than 74. Probability b. Between 74 and 80. Probability c. Between 80 and 81. Probability d. Greater than 81. Probability
A normal population has a mean of 89 and a standard deviation of 8. You select...
A normal population has a mean of 89 and a standard deviation of 8. You select a sample of 35. Use Appendix B.1 for the z-values. Compute the probability that the sample mean is: (Round the z-values to 2 decimal places and the final answers to 4 decimal places.) a. Less than 87. Probability b. Between 87 and 91 Probability c. Between 91 and 92. Probability d. Greater than 92. Probability
A normal population has a mean of 61 and a standard deviation of 4. You select...
A normal population has a mean of 61 and a standard deviation of 4. You select a sample of 38. Compute the probability that the sample mean is: (Round your z values to 2 decimal places and final answers to 4 decimal places.) Less than 60. Between 60 and 62. Between 62 and 63. Greater than 63.
How to calculate the following in Exel? PS: Exel! Normal population has a mean of 61...
How to calculate the following in Exel? PS: Exel! Normal population has a mean of 61 and a standard deviation of 13. You select a random sample of 16. Compute the probability the sample mean is:(Round z values to 2 decimal places and final answers to 4 decimal places.) (a) Greater than 64. (b) Less than 57. ( c) Between 57 and 64.
The mean of a population is 76 and the standard deviation is 13. The shape of...
The mean of a population is 76 and the standard deviation is 13. The shape of the population is unknown. Determine the probability of each of the following occurring from this population. a. A random sample of size 36 yielding a sample mean of 78 or more b. A random sample of size 120 yielding a sample mean of between 75 and 79 c. A random sample of size 219 yielding a sample mean of less than 76.7 (Round all...
The mean of a normal distribution is 520 kg. The standard deviation is 9 kg. Refer...
The mean of a normal distribution is 520 kg. The standard deviation is 9 kg. Refer to the table in Appendix B.1. (Round the z values to 2 decimal places and the final answers to 4 decimal places.) a. What is the area between 538 kg and the mean of 520 kg? Area b. What is the area between the mean and 510 kg? Area c. What is the probability of selecting a value at random and discovering that it...
A normal population has a mean of 10.2 and a standard deviation of 1.4. Refer to...
A normal population has a mean of 10.2 and a standard deviation of 1.4. Refer to the table in Appendix B.1. a. Compute the z-value associated with 14.3. (Round the final answer to 2 decimal places.) z = b. What proportion of the population is between 10.2 and 14.3? (Round z-score computation to 2 decimal places and the final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 10.0? (Round z-score computation to 2...
A normal population has a mean of 11.8 and a standard deviation of 4.6. Refer to...
A normal population has a mean of 11.8 and a standard deviation of 4.6. Refer to the table in Appendix B.1.   a. Compute the z-value associated with 14.3. (Round the final answer to 2 decimal places.) z =               b. What proportion of the population is between 11.8 and 14.3? (Round z-score computation to 2 decimal places and the final answer to 4 decimal places.) Proportion            c. What proportion of the population is less than 10.0?...
A normal population has a mean of 21 and a standard deviation of 3. Use Appendix...
A normal population has a mean of 21 and a standard deviation of 3. Use Appendix B.3. Compute the z value associated with 27. (Round your answer to 2 decimal places.) What proportion of the population is between 21 and 27? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) What proportion of the population is less than 18? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT