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01/27/23

Linear Regressions (need help as soon as possible please!)

A mathematics teacher wanted to see the correlation between test scores and homework. The homework grade (x) and test grade (y) are given in the accompanying table. Write the linear regression... more

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Statistics

01/24/23

Use the given data in Microsoft Excel to find the best predicted value of the response variable.

The regression equation relating dexterity scores x and productivity scores y for the employees of a company is y=5.50+1.91x. Ten pairs of data were used to obtain the equation. The same data yield... more

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Statistics

01/24/23

A normally-distributed population has a mean μ = 132 and a standard deviation σ = 20. For a set of samples of size 60 taken from this population,

A normally-distributed population has a mean μ = 132 and a standard deviation σ = 20. For a set of samples of size 60 taken from this population, what is the z-value for the proportion of the... more

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Statistics

01/23/23

Help with this problem.

To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of credits for the course. Suppose a student had these grades:4.0 in a 5... more

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Statistics

01/23/23

Find the Mean of this Problem

Find the mean. Round your answer to 4 decimal places. Deliveries Each WeekFrequency 4 7 8 4 12 2 16 6

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Statistics Math

01/23/23

question in description

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.55 and a standard deviation of 0.39. Using the empirical rule, what... more

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Statistics

01/21/23

Statistic Question (read below)

Healthy 10-year-old domestic kittens have an average weight of 28.5 oz with standard deviations of 8.25 oz. The distribution is approximately normal. A kitten is designated as dangerously... more

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Statistics

01/20/23

Find the probability of spinning blue on the first spin, cyan on the second spin, and cyan on the third spin.

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Statistics

01/20/23

Please help provide steps to answer these.

At a local high school, a random sample of students were selected and asked to choose their most favorite sport. The results are shown below. In Order -Baseball,Basketball, Football,... more

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Statistics

01/19/23

Binomial distribution

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly... more

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Statistics

01/19/23

A magazine ran a survey about a web site for downloading music. Readers could register their responses on the magazine's web site. Identify what is wrong.

The magazine has an interest in the survey results, so the source of the survey is questionable.B.The sample is a voluntary response sample, so there is a good chance that the results do not... more

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Statistics

01/19/23

A magazine ran a survey about a web site for downloading music. Readers could register their responses on the magazine's web site. Identify what is wrong.

statistics, what can go wrong with the survey

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Statistics Math

01/18/23

A data set with whole numbers has a low value of 40 and a high value of 114

Find the class width for a frequency table with seven classfind the class limits for a frequency table with 7 classes

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Statistics Math Probability

01/15/23

I need help with this question of probability

Male Female TotalAge 19 & under 4746 4517 9263Age 20 1625 1553 3178Age 21 1679 1627 3306Total--------------8050----7697-----15747Find... more

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Statistics

01/14/23

On a nationwide math test, the mean was 72 and the standard deviation was 10. If Roberto scored 75, what was his z-score? Round your answer to the nearest hundredth.

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Answers •2

Statistics

01/14/23

Please help answer with steps on how to do it.

The grade point averages (GPAs) of all college students are normally distributed with mean 2.1 and standard deviation 0.5.Part AAbout % of all students have the GPA at least 1.6.(Rounding the... more

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Statistics

01/13/23

Help Answer. For Part B 1. I put -1.88, -1.881, -1.885 as answers and they're still incorrect, how come?

The age of all farmers are normally distributed with a mean 51 years old and standard deviaiton 11 years old.Part AFind X such as 98% of all farmers are younger X years old.(1) Use the Normal table... more

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Statistics Math Sat Math

01/12/23

Healthful Habits Statistics

If 10% of the males of a population smoke cigars, and if 10% of the females of the same population smoke cigarettes, and if the probability of a mental birth impairment is 0.0 for neither parent... more

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Statistics

01/12/23

Answer each question with steps on how to do them

The speeds of vehicles passing through a construction zone are normally distributed with a mean of 47 miles per hour and standard deviation of 3 miles per hour.Part AIf 45% of vehicles passing... more

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Statistics

01/09/23

About 2% of the population has a particular genetic mutation. 600 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 600.

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Statistics

01/08/23

What is the best way to analyze this

When studying anxiety in undergraduate nursing students, I also found that stress (PSS) was positively correlated with anxiety levels (STAI). I want to answer the question: Is stress in... more

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Statistics

01/07/23

Enter the probability as a fraction. P(at least one green) =

Suppose that you have 8 cards. 3 are green and 5 are yellow. The 3 green cards are numbered 1, 2, and 3. The 5 yellow cards are numbered 1, 2, 3, 4, and 5. The cards are well shuffled. Suppose that... more

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Statistics

01/06/23

Enter the probability as a fraction. P(at least one green) =

Suppose that you have 9 cards. 4 are green and 5 are yellow. The 4 green cards are numbered 1, 2, 3, and 4. The 5 yellow cards are numbered 1, 2, 3, 4, and 5. The cards are well shuffled. Suppose... more

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Statistics

01/04/23

Standard Normal Distribution

In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 60 and a standard deviation of 3. Using the... more

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Statistics

01/04/23

standard normal distribution

A company has a policy of retiring company cars; this policy looks at the number of miles driven, the purpose of trips, the style of the car, and other features. The distribution of the number of... more

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Linear Regressions (need help as soon as possible please!)

Use the given data in Microsoft Excel to find the best predicted value of the response variable.

A normally-distributed population has a mean μ = 132 and a standard deviation σ = 20. For a set of samples of size 60 taken from this population,

Help with this problem.

Find the Mean of this Problem

question in description

Statistic Question (read below)

Find the probability of spinning blue on the first spin, cyan on the second spin, and cyan on the third spin.

Please help provide steps to answer these.

Binomial distribution

A magazine ran a survey about a web site for downloading music. Readers could register their responses on the​ magazine's web site. Identify what is wrong.

A magazine ran a survey about a web site for downloading music. Readers could register their responses on the​ magazine's web site. Identify what is wrong.

A data set with whole numbers has a low value of 40 and a high value of 114

I need help with this question of probability

On a nationwide math test, the mean was 72 and the standard deviation was 10. If Roberto scored 75, what was his z-score? Round your answer to the nearest hundredth.

Please help answer with steps on how to do it.

Help Answer. For Part B 1. I put -1.88, -1.881, -1.885 as answers and they're still incorrect, how come?

Healthful Habits Statistics

Answer each question with steps on how to do them

About 2% of the population has a particular genetic mutation. 600 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 600.

What is the best way to analyze this

Enter the probability as a fraction. P(at least one green) =

Enter the probability as a fraction. P(at least one green) =

Standard Normal Distribution

standard normal distribution

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A magazine ran a survey about a web site for downloading music. Readers could register their responses on the magazine's web site. Identify what is wrong.

A magazine ran a survey about a web site for downloading music. Readers could register their responses on the magazine's web site. Identify what is wrong.