By Central limit theorem, the sampling distribution of the sample means follow normal distribution with
Graph (b) most closely resembles the sampling
distribution of the sample means, because
and
and the graph approximates a normal curve.
The graph of the waiting time (in seconds) at a red light is shown below on...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...
The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 85.5 85.5 seconds. A manager devises a new drive-through system that she she believes will decrease wait time. As a test, she she initiates the new system at her her restaurant and measures the wait time for 10 10 randomly selected orders. The wait times are provided in the table to the right. Complete...
The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 86.286.2 seconds. A manager devises a new drive-through system that hehe believes will decrease wait time. As a test, hehe initiates the new system at hishis restaurant and measures the wait time for 1010 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below....
The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 87.6 seconds. A manager devises a new drive-through system that he believes will decrease wait time. As a test, he initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below....
This Test: 45 pts pos Find the indicated z-scores shown in the graph Click to view.page 1 of the Standard Normal Table The z-scores are Use a comma to separate answers as needed Round to two decimal places as needed ) Find the indicated probability using the standard normal distribution. P(z > 2.02) Click here to view page 1 of the standard normal table, Click here to view page 2 of the standard normal table P(Z> 2.02)(Round to four decimal...