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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

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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

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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

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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

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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.

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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.

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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

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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

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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

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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

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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

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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

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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)

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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?

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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

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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

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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

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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

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Statistics

11/19/21

If n1= 22 and n2=15 what critical value would you use to test the claim μ1<μ when α=.05?

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Statistics Spss

11/19/21

Generalised-linear models and data input

I am working with choice test data from an Ecological experiment and I need to decide if I am doing a GLM or GEE. I am running SPSS but also not sure about data input with these tests. Individuals... more

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Statistics

11/18/21

Mathematical P and x

P(x>77.6)=P(x<70.9)=P(73.7<x<78.6)=n=74 mean=75standard deviation x =2

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Statistics

11/18/21

Point estimate math

Determine the point estimate of the population proportion, The margin of error for the following confidence interval. lower bound is.439 upper bound is .721 n equals 1000The point estimate is?The... more

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Statistics

11/18/21

Point estimate math

Determine the Point estimate a population mean and margin of error for confidence interval lower bound is 19 upper bound is 25

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Statistics

11/16/21

Finding percentile

How will find the percentile for three or more students who scored the same points in their test?Ex.If a test is out of 20 marks and 10 students sat for the test.8,7,9,12,13,13,13,15,18,19How am I... more

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Statistics

11/16/21

Calculate the test-statistic, t with the following information. n1=40, ¯x1=2.93, s1=0.51, n2=30, ¯x2=2.88, s2=0.66

Calculate the test-statistic, t with the following information.n1=40, ¯x1=2.93, s1=0.51, n2=30, ¯x2=2.88, s2=0.66Rounded to 2 decimal places.

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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

If n1= 22 and n2=15 what critical value would you use to test the claim μ1<μ when α=.05​?

Generalised-linear models and data input

Mathematical P and x

Point estimate math

Point estimate math

Finding percentile

Calculate the test-statistic, t with the following information. n1=40, ¯x1=2.93, s1=0.51, n2=30, ¯x2=2.88, s2=0.66

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

If n1= 22 and n2=15 what critical value would you use to test the claim μ1<μ when α=.05?