Question 2 B 1.2/2 pts 5 1-2 99 O Details Let X represent the full height of a certain species of tree. Assume that X has a normal probability distribution with mean 161.7 ft and standard deviation 3 ft. You intend to measure a random sample of n = 29 trees. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. Hz = 161.70 v Oz = 0.56 vo 160.02 x 161.70 v o 163.38 x

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Question 2
C 1.2/2 pts 5 1-2 99 O Details
Let X represent the full height of a certain species of tree. Assume that X has a normal probability
distribution with mean 161.7 ft and standard deviation 3 ft.
You intend to measure a random sample of n = 29 trees. The bell curve below represents the
distibution of these sample means. The scale on the horizontal axis is the standard error of the
sampling distribution. Complete the indicated boxes, correct to two decimal places.
H도 = | 161.70 o
Oz =0.56
160.02 x
161.70 v o 163.38 x
Question 3
C1.2/2 pts 5 2-3 2 99 O Details
Let X represent the full height of a certain species of tree. Assume that X has a normal probability
distribution with mean 36.3 ft and standard deviation 97.4 ft.
You intend to measure a random sample of n = 125 trees. The bell curve below represents the
distribution of these sample means. The scale on the horizontal axis is the standard error (standard
deviation) of the sampling distribution. Complete the indicated boxes, correct to two decimal
places.
Hi =| 36.3
Oz =| 8.71
36.3
Transcribed Image Text:Question 2 C 1.2/2 pts 5 1-2 99 O Details Let X represent the full height of a certain species of tree. Assume that X has a normal probability distribution with mean 161.7 ft and standard deviation 3 ft. You intend to measure a random sample of n = 29 trees. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard error of the sampling distribution. Complete the indicated boxes, correct to two decimal places. H도 = | 161.70 o Oz =0.56 160.02 x 161.70 v o 163.38 x Question 3 C1.2/2 pts 5 2-3 2 99 O Details Let X represent the full height of a certain species of tree. Assume that X has a normal probability distribution with mean 36.3 ft and standard deviation 97.4 ft. You intend to measure a random sample of n = 125 trees. The bell curve below represents the distribution of these sample means. The scale on the horizontal axis is the standard error (standard deviation) of the sampling distribution. Complete the indicated boxes, correct to two decimal places. Hi =| 36.3 Oz =| 8.71 36.3
O Question 5
C 0/4 pts O 3 99 O Details
The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days
and a standard deviation of 13 days.
In what range would you expect to find the middle 68% of most pregnancies?
Between
and
If you were to draw samples of size 47 from this population, in what range would you expect to find
the middle 68% of most averages for the lengths of pregnancies in the sample?
Between
and
Enter your answers as numbers. Your answers should be accurate to 2 decimal places.
Question 6
C 0/4 pts O3 99 O Details
Engineers must consider the breadths of male heads when designing helmets. The company
researchers have determined that the population of potential clientele have head breadths that are
normally distributed with a mean of 5.8-in and a standard deviation of 1.2-in.
In what range would you expect to find the middle 68% of most head breadths?
Between
and
If you were to draw samples of size 60 from this population, in what range would you expect to find
the middle 68% of most averages for the breadths of male heads in the sample?
Between
and
Enter your answers as numbers. Your answers should be accurate to 2 decimal places.
O Question 7
B 0/4 pts O3 99 O Details
Engineers must consider the breadths of male heads when designing helmets. The company
researchers have determined that the population of potential clientele have head breadths that are
normally distributed with a mean of 5.6-in and a standard deviation of 0.8-in.
In what range would you expect to find the middle 98% of most head breadths?
Between
and
If you were to draw samples of size 37 from this population, in what range would you expect to find
the middle 98% of most averages for the breadths of male heads in the sample?
Between
and
Transcribed Image Text:O Question 5 C 0/4 pts O 3 99 O Details The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days and a standard deviation of 13 days. In what range would you expect to find the middle 68% of most pregnancies? Between and If you were to draw samples of size 47 from this population, in what range would you expect to find the middle 68% of most averages for the lengths of pregnancies in the sample? Between and Enter your answers as numbers. Your answers should be accurate to 2 decimal places. Question 6 C 0/4 pts O3 99 O Details Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 5.8-in and a standard deviation of 1.2-in. In what range would you expect to find the middle 68% of most head breadths? Between and If you were to draw samples of size 60 from this population, in what range would you expect to find the middle 68% of most averages for the breadths of male heads in the sample? Between and Enter your answers as numbers. Your answers should be accurate to 2 decimal places. O Question 7 B 0/4 pts O3 99 O Details Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 5.6-in and a standard deviation of 0.8-in. In what range would you expect to find the middle 98% of most head breadths? Between and If you were to draw samples of size 37 from this population, in what range would you expect to find the middle 98% of most averages for the breadths of male heads in the sample? Between and
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