Slovenujozk
2022-09-12
Answered

What relationship exists between the standard normal distribution and the box-plot methodology for describing distributions of data by means of quartiles? The answer depends on the true underlying probability distribution of the data. Assume for the remainder of this exercise that the distribution is normal. Calculate the z values that correspond to the outer fences of the box plot for a normal probability distribution.

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asked 2021-02-25

Explain why t distributions tend to be flatter and more spread out than the normal distribution.

asked 2021-02-27

The manager of the store in the preceding exercise calculated the residual for each point in the scatterplot and made a dotplot of the residuals.

The distribution of residuals is roughly Normal with a mean of $0 and standard deviation of $22.92.

The middle 95% of residuals should be between which two values? Use this information to give an interval of plausible values for the weekly sales revenue if 5 linear feet are allocated to the stores

The distribution of residuals is roughly Normal with a mean of $0 and standard deviation of $22.92.

The middle 95% of residuals should be between which two values? Use this information to give an interval of plausible values for the weekly sales revenue if 5 linear feet are allocated to the stores

asked 2021-05-03

Describe in words the surface whose equation is given. (assume that r is not negative.) $\theta =\frac{\pi}{4}$

a) The plane$y=-z$ where y is not negative

b) The plane$y=z$ where y and z are not negative

c) The plane$y=x$ where x and y are not negative

d) The plane$y=-x$ where y is not negative

e) The plane$x=z$ where x and y are not negative

a) The plane

b) The plane

c) The plane

d) The plane

e) The plane

asked 2022-04-11

A simple random sample of *n* measurements from a population is a subset of the population selected in a manner such that which of the following is/are true?

asked 2021-05-26

If

asked 2020-12-01

True or false:

a. All normal distributions are symmetrical

b. All normal distributions have a mean of 1.0

c. All normal distributions have a standard deviation of 1.0

d. The total area under the curve of all normal distributions is equal to 1

a. All normal distributions are symmetrical

b. All normal distributions have a mean of 1.0

c. All normal distributions have a standard deviation of 1.0

d. The total area under the curve of all normal distributions is equal to 1

asked 2021-08-18

Assume that females have pulse rates that are normally distributed with a mean of 74. 0 beats per minute and a standard
deviation of 12.5 beats per minute.

If 1 adult female is randomly selected, find the probability that her pulse rate is greater than 70 beats per minute.

If 1 adult female is randomly selected, find the probability that her pulse rate is greater than 70 beats per minute.