ashwindiwan4

The weights of the chocolate in Hershey Kisses are normally distributed with a mean of 4.5338 g and a standard deviation of 0.1039 g.

For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what Is the area under the curve?

What is the value of the median?

What is the value of the mode?

What is the value of the variance?

For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what is the area under the curve?
(Type an integer or a decimal. Do not round.)

What is the value of the median?
g (Round to four decimal places as needed.)

What is the value of the mode?
g (Round to four decimal places as needed.)

What is the value of the variance?
9? (Round to four decimal places as needed.)

The overhead reach distances of adult females are normally distributed with a mean of 205.5 cm and a standard deviation of 8.9 cm.

Find the probability that an individual distance is greater than 215.50 cm.

Find the probability that the mean for 20 randomly selected distances Is greater than 204.00 cm.

Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

a. The probability is

(Round to four decimal places as needed.)

b. The probability is

(Round to four decimal places as needed.)

c. Choose the correct answer below.

O A. The normal distribution can be used because thI original population has a normal distribution.

B. The normal distribution can be used because the probability is less than 0.5

C. The normal distribution can be used because the mean is large.

D. The normal distribution can be used because the finite population correction factor is small.

I

Assume that females have pulse rates that are normally distributed with a mean of u = 74.0 beats per minute and a standard deviation of a = 12.5 beats per minute

a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 80 beats per minute

The probability is

(Round to four decimal places as needed.)

b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 80 beats per minute

The probability is

(Round to four decimal places as needed.

c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

A.
Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.

B. Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample size

• C.

Since the mean pulse rate exceeds 30. the distribution of sample means is a normal distribution for an sample size

• D.

Since the distribution is of sample means, not individuals, the

distribution is a normal distribution for any sample size

Engineers want to design seats In commercial aircraft so that they are wide enough to fit 99% of all adults. (Accommodating 100% of adults would require very wide seats that would be much too expensive.) Assume adults have hip widths that are normally distributed with a mean of 14.1 In. and a standard deviation of 1.2 in. Find P99. That Is

find the hip width for adults that separates the smallest 99% from the largest 1%

estion 1

What is the maximum hip width that is required to satisfy the requirement of fitting 99% of adults?

(Blank) in. (Round to one decimal place as needed.)