Jon S.

03/06/21

X^2 Contingency table

In the French population, the distribution of the variable 'Gender' is known and is as follows: 50% men and 50%women. A research wishes to investigate whether the distribution of the variable... more

Follows • 1

Answers •1

Statistics

03/06/21

A researcher is interested in the level of depression. He draws a simple random sample and obtains the following 95% confidence interval for the population mean of depression (14.7;22.5). He uses... more

Follows • 1

Answers •1

Statistics

03/06/21

You measure 42 textbooks' weights, and find they have a mean weight of 62 ounces. Assume the population standard deviation is 8.7 ounces. .

Based on this, construct a 95% confidence interval for the true population mean textbook weight.

Follows • 1

Answers •1

Probability

03/05/21

Probability question

When we find conditional probabilities, do we need to check to see if they are mutually exclusive or if they are independent?

Follows • 1

Answers •1

Probability

03/05/21

Probability question

What do we mean when we say that the probability is a conditional probability?

Follows • 1

Answers •1

Statistics

03/05/21

Student Heights

The heights of the population of students at a college are normally distributed with a mean of 68 inches (5 feet 8 inches), a standard deviation of 3 inches, and a sample size of 100 students. Find... more

Follows • 1

Answers •1

Math Geometry Trigonometry

03/05/21

under a dilation of the point M(15,6) is M'(5,2). Choose the general rule that describes the dilation mapping point M to point M'

A: (x,y)->(1/3x,1/3y)B: (x,y)->(1/3x,3y)C:(x,y)->(3x,1/3y)D:(x,y)->(3x,3y)

Follows • 1

Answers •2

Geometry

03/05/21

A rectangular pyramid has a base that is 8 inches long and 4 inches wide. The Volume of the pyramid is 320 cubic inches. What is the height of the pyramid?

A) 32B) 10.7C) 29.9D) 19.9

Follows • 1

Answers •1

Geometry

03/05/21

please help I dont know how to answer this equation for geometry

Find the measure of each angle. <EFG and <LMN are supplementary angles, m<EFG=(3x+17)degrees, m<LMN=(1/2x -5)degreesm<EFG=m<LMN=

Follows • 1

Answers •1

Statistics Lynne

03/05/21

Statistics - Suppose X ~ (5, 6) what’s the value of the mean?

X ~ N (5, 6) what is the mean show formula please 🌹

Follows • 1

Answers •1

Probability

03/05/21

HELPP probability marbles

Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following questions. Reduce all fractions. Use / as the fraction bar and do not... more

Follows • 1

Answers •1

Statistics

03/05/21

Assessment Part 2

An online grocery company is researching the best location to start their new delivery service. They are comparing two local regions, A and B. In a random sample of 505 residents in region A, 26.1%... more

Follows • 1

Answers •1

Statistics

03/05/21

How would i answer this question?

Construct a frequency distribution table for the following set of scores. Include columns for proportion and percentage in your table.Scores 2,7,5,3,2,9,6,1,1,23,3,2,4,5,2,5,4,6,5

Follows • 1

Answers •1

Algebra 1

03/05/21