Newest statistics Questions | Wyzant Ask An Expert

Statistics

12/02/21

Assume that the populations are normally distributed. Test the hypothesis σ1≠σ2 at the α=0.05 level of significance.

Please show the math used to solve the problem. Sorry some people just list answer with none of the math. thanks in advanceAssume that the populations are normally distributed. Test the hypothesis... more

Follows • 2

Answers •1

Statistics Math Regression Regression Line

12/01/21

Help Me Fit This Regression line Pleaseee

The following table displays the mathematics test scores for a random sample of, along with their final SY16C grades.a.Fit the regression line y=a+bx to the dataand interpret the results.b.Use the... more

Follows • 1

Answers •1

Statistics Probability

12/01/21

Probability normal distribution

A hospital is trying to improve quality in every area. One of the metrics they look closely at is the quality of physicians. Several individual measurements contribute to a physician's quality... more

Follows • 2

Answers •1

Statistics Data

12/01/21

Normal distribution

500 students are getting ready to take the bar exam. Assume that the scores can be approximated by a normal distribution. How many students do we expect to be within 2 standard deviations from the... more

Follows • 1

Answers •1

Statistics Math

11/30/21

Normal distribution

in a weightlifting championship that takes the form of a normal distribution with a mean of 265 and a standard deviation of 45, if an athlete wants to be in the top five of the distribution, what... more

Follows • 2

Answers •1

Statistics Math College Algebra

11/30/21

Find the equation of the line

The Slope is 3/2 and the y-intercept is (0,-2) what is the equation of the line in slope-intercept form?

Follows • 1

Answers •1

Statistics

11/30/21

Normal distribution

In a weightlifting championship that takes the form of a normal distribution with a mean of 265 and a standard deviation of 45, if an athlete wants to be in the top five of the distribution, what... more

Follows • 3

Answers •1

Statistics

11/28/21

You want to obtain a sample to estimate a population mean.

Based on previous evidence, you believe the population standard deviation is approximately σ=31.8. You would like to be 95% confident that your estimate is within 4 of the true population mean.... more

Follows • 2

Answers •1

Statistics Math

11/27/21

What is the probability that the number of crates having small to medium-sized eggs ranges from 65 to 70?

Vasu places large-sized eggs in crates that each hold 12 eggs. It is known from previous experience that 20% of all such crates contain eggs that are small to medium-sized (instead of large). A... more

Follows • 0

Answers •1

Statistics Math

11/27/21

How many crates from the sample are expected to have small to medium-sized eggs?

Vasu places large-sized eggs in crates that each hold 12 eggs. It is known from previous experience that 20% of all such crates contain eggs that are small to medium-sized (instead of large). A... more

Follows • 1

Answers •1

Statistics Math

11/27/21

What is P(1≤𝑌<4)?

𝒀 = 𝒚 0 1 30 4 5𝑷(𝒀 = 𝒚) 0.30 0.15 0.40 0.13 0.02E(X) = 12.77

Follows • 1

Answers •1

Statistics Math Probability Mathematics

11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is between 117.5 grams and 120 grams

The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.

Follows • 1

Answers •1

Statistics Math Probability

11/27/21

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is more than 113 grams?

The amount of cashew nuts per packet (𝑌), sold by a company, can be modelled using a normal random variable with a mean of 115.0 grams and a variance of 4.0 grams.

Follows • 1

Answers •1

Statistics

11/26/21

Help me with this stats problems please!

1.Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 237 with 65.8% successes at a confidence level of... more

Follows • 1

Answers •1

Statistics

11/26/21

PROBABILITY OF AN EVENT

Wwhich numbers would be a probability of an event?0.29, 1.25, 0, 04, -0.54, 0, 1

Follows • 1

Answers •1

Statistics Biology Biostatistics Genetics

11/25/21

Find the probability if a couple to have 3 children that will be unaffected by Tay-Sachs disease

what is the probability that if the couple has three children, none of them will be affected by the syndrome. refer to the attached picture and show solution.is it 107/144? can you verify my... more

Follows • 1

Answers •1

Statistics

11/25/21

What is the standard score for an exam score of 68?

The scores on a psychology exam were normally distributed with a mean of 67 and a standard deviation of 5.What is the standard score for an exam score of 68?The standard score is .(Round to the... more

Follows • 1

Answers •1

Statistics

11/22/21

Among American women aged 20-29 years, 10% are less than 60.8 inches tall,

80% are between 60.8 inches and 67.6 inches tall, and 10% are more than 67.6 inches tall. Assuming that the height distribution can adequately be approximated by a normal curve, find the mean and... more

Follows • 1

Answers •1

Statistics

11/21/21

This exercise refers to the following Minitab output, relating y = son's height to x = father's height for a sample of n = 76 college males.

This exercise refers to the following Minitab output, relating y = son's height to x = father's height for a sample of n = 76 college males.The regression equation isHeight = 30.0 + 0.576... more

Follows • 1

Answers •1

Statistics

11/21/21

If n=22, ¯ x x ¯ (x-bar)=35, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)

Follows • 1

Answers •1

Statistics

11/20/21

In need of help

the slope is -5 and the y-intercepts are (-2,6) what is the equation for this line?

Follows • 1

Answers •1

Statistics

11/20/21

Math Question on statistics

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.9 years, and standard deviation of 0.9 years.The 2% of items with the shortest lifespan will last less... more

Follows • 1

Answers •1

Statistics

11/20/21

plz help with my stats hw

If n=460 and ˆpp^ (p-hat) =0.64, find the margin of error at a 99% confidence levelGive your answer to three decimals

Follows • 1

Answers •1

Statistics

11/20/21

if anyone could give me the answer for my stats hw thanksss

If n = 100 and ˆpp^ (p-hat) = 0.9, construct a 99% confidence interval.round to 3 decimals

Follows • 1

Answers •1

Statistics Mathematics

11/20/21

Find the standard deviation

Find the standard deviation of 2,4,6,8,10, 12 , …,2n where n is a natural number

Follows • 0

Answers •1

Assume that the populations are normally distributed. Test the hypothesis σ1≠σ2 at the α=0.05 level of significance.

Help Me Fit This Regression line Pleaseee

Probability normal distribution

Normal distribution

Normal distribution

Find the equation of the line

Normal distribution

You want to obtain a sample to estimate a population mean.

What is the probability that the number of crates having small to medium-sized eggs ranges from 65 to 70?

How many crates from the sample are expected to have small to medium-sized eggs?

What is P(1≤𝑌<4)?

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is between 117.5 grams and 120 grams

What is the probability that the amount of cashew nuts, in a randomly selected packet sold by this company, is more than 113 grams?

Help me with this stats problems please!

PROBABILITY OF AN EVENT

Find the probability if a couple to have 3 children that will be unaffected by Tay-Sachs disease

What is the standard score for an exam score of 68​?

Among American women aged 20-29 years, 10% are less than 60.8 inches tall,

This exercise refers to the following Minitab output, relating y = son's height to x = father's height for a sample of n = 76 college males.

If n=22, ¯ x x ¯ (x-bar)=35, and s=6, find the margin of error at a 99% confidence level (use at least three decimal places)

In need of help

Math Question on statistics

plz help with my stats hw

if anyone could give me the answer for my stats hw thanksss

Find the standard deviation

Still looking for help? Get the right answer, fast.

OR

RELATED TOPICS

RELATED QUESTIONS

statistics

statistics

I need a creative ideas

RECOMMENDED TUTORS

find an online tutor

What is the standard score for an exam score of 68?