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02/06/22

Independent random samples of professional football and basketball players gave the following information. Assume that the weight distributions are mound-shaped and symmetric.

Weights (in lb) of pro football players: x1; n1 = 21 245 263 255 251 244 276 240 265 257 252 282 256 250 264 270 275 245 275 253 265 272 Weights (in lb) of pro basketball players: x2; n2 =... more

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Statistics Biostatistics

02/06/22

In a random sample of 530 judges, it was found that 287 were introverts.

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a random sample of 530 judges, it was found that 287 were... more

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Statistics Biostatistics

02/06/22

Statistics Question

The method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal... more

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Statistics

02/06/22

i dont get this

how to compute P(-1.22<t<1.22) with 14 degrees of freedom

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Statistics Probability

02/06/22

probability and statistics

1. Read the given data ‘TIPS.csv’ as a dataframe named Tips and answer the following question.a) In the tips dataframe, for the variable “total bill” what is the 3rd quartile and... more

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Statistics Probability

02/06/22

probability and statistics

1. There are 3 arrangements of the word DAD, namely DAD, ADD, and DDA. How many arrangements are there of the word ENDURINGLY? 2. There are 13 men and 12 women in a ballroom... more

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Statistics Differential Equations Probability

02/06/22

What is the equation here? 1 person is playing a game guessing a number and has odds of 1/256 so they get the right answer every 4minutes. What if 10 people are playing the same game independently?... more

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Statistics

02/05/22

sample variance

5-55-5-5145Calculate the value of the sample variance. Round your answer to one decimal place.

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Statistics

02/05/22

distribution and deviation

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.61 and a standard deviation of 0.45. Using the empirical rule, what... more

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Statistics

02/05/22

IQ scores and distribution

Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation of 14 . Using the empirical rule, what percentage of IQ scores are between 61 and 145?

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Statistics

02/05/22

standard deviation

Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given... more

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Statistics Graph Distribution

02/04/22

He gathers the following sample:13,15,13,16,14,20,15,20,21,14,17,18,19,12,14,18,,13 . appropriate graphical representation and describe the distribution of number of pieces of cereal on the floor.

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Statistics Standard Deviation Mean Normal Distribution

02/04/22

Julio observed that customer satisfaction ratings are normally distributed. If the 33rd percentile is 6.775, and the 65th percentile is 7.394 on a scale from 0-10 find the mean and standard deviation

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Statistics Probability

02/03/22

An unfair die is tossed. Determine which of the following assignments could be made for the probabilities of each simple outcome. If an assignment cannot be made, tell why.

Question 1 part 1An unfair die is tossed. Determine which of the following assignments could be made for the probabilities of each simple outcome. If an assignment cannot be made, tell why.(a) 𝑃(1)... more

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Statistics

02/03/22

Stats Question (68-95-99.7 rule)

On an exam whose scores followed a normal distribution, a student's z-score was −1. What percentage of students scored better than he did? (Use the 68-95-99.7 Rule.)

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Statistics Spss Research Statistics Method

02/02/22

Which method should I use to utilize my data in SPSS?

I have a dataset that I need to utilize for my dissertation, but I was not sure which method to utilize the data. Therefore, I need help!My study is comparing pretest scores, midtest scores (after... more

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Statistics Probability

02/02/22

The discrete random variable Z has the following discrete random variable distribution. What is E([Z-2]^2)?

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Statistics Probablity

02/02/22

stats and probablity!

e BMI for female patients with Type II Diabetes is normally distributed with a mean of 32.96 and standard deviation 6.75. Use the Empirical Rule to answer part a. We expect 68% of females with Type... more

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Statistics Probability

02/02/22

Struggling! Any help would be appriciated. In previous questions i was able to get all z scores but not the probability.

Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 217 mg/dL and standard deviation 46.47... more

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Statistics

02/01/22

Statistics help!

We want to test Ho: µ=50 against Ha: µ<50.Significance level = 10%Population standard deviation = 20random sample size = 30What is the power of the test if the true mean µ = 40?What is the... more

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Statistics

01/31/22

Statistic Help.

3. A sample of n = 9 scores has a M = 8. If on of the scores with a value of X = 12 isremoved from the sample of scores, what is the new mean for the remaining sample?4. A sample of scores has a M... more

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Statistics Probability

01/31/22

Find the smallest sigma-algebra for Ω = {−2, −1, 0, 1, 2}

Find the smallest sigma-algebra for which the function X(ω)=2|ω| is a random variable. Ω = {−2, −1, 0, 1, 2}Determine its distribution, probability function and E(X).

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Statistics

01/30/22

solving probability

Suppose that 47% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?

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Statistics

01/29/22

random Probability

Fertile (female) cats produce an average of six litters per year. Suppose that one fertile, female cat is randomly chosen. In one year, find the probability she produces:a. Find the probability... more

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Statistics

01/29/22

Acceptance Sampling

Many manufacturing companies use a quality control procedure called acceptance sampling to make sure that a specific production batch is up to their standards. To do this, a sample of the items... more

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Independent random samples of professional football and basketball players gave the following information. Assume that the weight distributions are mound-shaped and symmetric.

In a random sample of 530 judges, it was found that 287 were introverts.

Statistics Question

i dont get this

probability and statistics

probability and statistics

Equation help please

sample variance

distribution and deviation

IQ scores and distribution

standard deviation

He gathers the following sample:13,15,13,16,14,20,15,20,21,14,17,18,19,12,14,18,,13 . appropriate graphical representation and describe the distribution of number of pieces of cereal on the floor.

Julio observed that customer satisfaction ratings are normally distributed. If the 33rd percentile is 6.775, and the 65th percentile is 7.394 on a scale from 0-10 find the mean and standard deviation

An unfair die is tossed. Determine which of the following assignments could be made for the probabilities of each simple outcome. If an assignment cannot be made, tell why.

Stats Question (68-95-99.7 rule)

Which method should I use to utilize my data in SPSS?

The discrete random variable Z has the following discrete random variable distribution. What is E([Z-2]^2)?

stats and probablity!

Struggling! Any help would be appriciated. In previous questions i was able to get all z scores but not the probability.

Statistics help!

Statistic Help.

Find the smallest sigma-algebra for Ω = {−2, −1, 0, 1, 2}

solving probability

random Probability

Acceptance Sampling

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