Question

Question 1 (2 points) Suppose that you are attempting to determine the necessary sample size required to compute an interval estimate with a margin of error no larger than 14.0. Further suppose that the population standard deviation is known to be 72.0 and the desired confidence level is 95%. Use the table on Ch 08 slide 13 for more precise values of z. Round your answer to two (2) decimal places (don't round up to the next largest integer, D2L doesn't have a round-up function so just report the value from the formula). Your Answer: Answer Question 2 (2 points) Suppose that we are performing a two-tailed test and compute a t-statistic of 10.622. If the sample size is 4, what is the P(t)? Use the provided t table in the Module to aid you in answering the question. Question 3 (4 points) Suppose that a population is being studied that has a known standard deviation of 88. Further suppose a sample of size 130 is taken, resulting in a sample mean of 440. Determine the Point Estimate and the Margin of Error for a 90% Confidence Interval for this sample. Round all calculations to two (2) decimal places. Blank # 1 Blank # 2

          Question 1 (2 points)
Suppose that you are attempting to determine the necessary sample size required to
compute an interval estimate with a margin of error no larger than 14.0. Further
suppose that the population standard deviation is known to be 72.0 and the desired
confidence level is 95%. Use the table on Ch 08 slide 13 for more precise values of z.
Round your answer to two (2) decimal places (don't round up to the next largest
integer, D2L doesn't have a round-up function so just report the value from the
formula).
Your Answer:
Answer
Question 2 (2 points)
Suppose that we are performing a two-tailed test and compute a t-statistic of
10.622. If the sample size is 4, what is the P(t)? Use the provided t table in the
Module to aid you in answering the question.
Question 3 (4 points)
Suppose that a population is being studied that has a known standard deviation of
88. Further suppose a sample of size 130 is taken, resulting in a sample mean of 440.
Determine the Point Estimate and the Margin of Error for a 90% Confidence Interval
for this sample. Round all calculations to two (2) decimal places.
Blank # 1
Blank # 2

Question 1 (2 points)
Suppose that you are attempting to determine the necessary sample size required to
compute an interval estimate with a margin of error no larger than 14.0. Further
suppose that the population standard deviation is known to be 72.0 and the desired
confidence level is 95%. Use the table on Ch 08 slide 13 for more precise values of z.
Round your answer to two (2) decimal places (don't round up to the next largest
integer, D2L doesn't have a round-up function so just report the value from the
formula).
Your Answer:
Answer
Question 2 (2 points)
Suppose that we are performing a two-tailed test and compute a t-statistic of
10.622. If the sample size is 4, what is the P(t)? Use the provided t table in the
Module to aid you in answering the question.
Question 3 (4 points)
Suppose that a population is being studied that has a known standard deviation of
88. Further suppose a sample of size 130 is taken, resulting in a sample mean of 440.
Determine the Point Estimate and the Margin of Error for a 90% Confidence Interval
for this sample. Round all calculations to two (2) decimal places.
Blank # 1
Blank # 2

Added by Paul M.

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