Questions
A company has a policy of retiring company cars; this policy looks at number of miles...

A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 55 months and a standard deviation of 8 months. Using the empirical rule (as presented in the book), what is the approximate percentage of cars that remain in service between 39 and 47 months?

Do not enter the percent symbol.
ans =  %

In: Statistics and Probability

The heights of newborn babies have a symmetric distribution with a mean of 20 inches and...

The heights of newborn babies have a symmetric distribution with a mean of 20 inches and a SD of 2 inches. Find the percentage of newborn babies whose height is between 18 inches and 22 inches

Answer the following questions:

  • Do you apply Chebyshev’s Theorem or OR Empirical Rule?
  • What is K? Remember that “k” is the number of standard deviation from the mean?
  • The percentage of newborn babies whose height is between 18 inches and 22 inches is:

In: Statistics and Probability

Variables This week, you studied different kinds of variables. Refer to the South University Online Library...

Variables This week, you studied different kinds of variables. Refer to the South University Online Library and select an empirical article that covers a topic of interest to you and has clearly identified variables, ensuring that the study is recent (i.e., conducted within the past five years). Describe the methods used. In addition, discuss the variables and scales used in each study. At the conclusion of your discussion, describe how you would code these variables in Minitab.

In: Statistics and Probability

Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a...

Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule to determine the following. ​(a) What percentage of people has an IQ score between 62 and 138​? ​(b) What percentage of people has an IQ score less than 43 or greater than 157​? ​(c) What percentage of people has an IQ score greater than 138​? ​(a) 95​% ​(Type an integer or a​ decimal.)

In: Statistics and Probability

Development can be measured in many ways, starting with economic growth. What is the biggest concern...

Development can be measured in many ways, starting with economic growth. What is the biggest concern for how development might be worsened as economic growth improves? Using an empirical example and/or theoretical critique, state the nature of the concern and how and why this concern might be caused by economic growth.

Essay Question. Must begin with thesis. please identify all relevant concepts, terms and discuss critically all other positions against and aswell as in favor.

In: Economics

Determine the extent to which an unhealthy population can have a negative impact on the progress...

Determine the extent to which an unhealthy population can have a negative impact on the progress toward sustainable economic development of a Caribbean economy of your choice. Use empirical data to support your arguments.

Guiding Questions/areas to be covered

  1. Explain the concepts of health, human capital and economic development   –
  2. What indicators should be in place if economic development is to be achieved?
  3. Determine the impact of loss of skilled personnel in key sectors such as health education and industry.

In: Economics

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean...

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 246.3 and a standard deviation of 60.3. ​(All units are 1000 ​cells/mu​L.) Using the empirical​ rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the​ mean, or between 65.4 and 427.2​? b. What is the approximate percentage of women with platelet counts between 125.7 and 366.9​?

In: Statistics and Probability

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean...

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of

246.8246.8

and a standard deviation of

64.864.8.

​(All units are 1000

​cells/muμ​L.)

Using the empirical​ rule, find each approximate percentage below.

a.

What is the approximate percentage of women with platelet counts within

11

standard

deviationdeviation

of the​ mean, or between

182.0182.0

and

311.6311.6​?

b.

What is the approximate percentage of women with platelet counts between

117.2117.2

and

376.4376.4​?

In: Statistics and Probability

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean...

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of

260.9260.9

and a standard deviation of

65.465.4.

​(All units are 1000

​cells/muμ​L.)

Using the empirical​ rule, find each approximate percentage below.

a.

What is the approximate percentage of women with platelet counts within

33

standard

deviationsdeviations

of the​ mean, or between

64.764.7

and

457.1457.1​?

b.

What is the approximate percentage of women with platelet counts between

130.1130.1

and

391.7391.7​?

In: Statistics and Probability

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have...

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 62 ounces and a standard deviation of 9 ounces. Use the Empirical Rule, find

a) 68% of the widget weights lie between and

b) What percentage of the widget weights lie between 44 and 71 ounces? %

c) What percentage of the widget weights lie below 89 ? % Suggestion: sketch the distribution in order to answer these questions.

In: Statistics and Probability