Calculate the mean and standard deviation for the set of numbers {11,16, 20,17}

Calculate the mean and standard deviation for the set of numbers {11,16, 20,17}

billy has 15 min to get to his after-school job. Despite his best efforts, he is frequently late. His employer says that unless he arrives to work on time consistently, he will lose his job. He has...

A tile company produces floor tiles that has an average thickness of 55mm, with a standard deviation of 0.6mm. For premium quality floors, the tiles must have a thickness between 54mm and 55mm. What...

Determine the z- score for the given value Mean=9.3 standard deviation= 0.4 x=8.8

2.8, 3, 3.7, 4.3, 3.2, 2.9 What is the mean and the standard deviation?

Person A has a z-score of -3 and is on her phone for 7 hours a day. Person B has a z-score of -4 and is on her phone for 3 hours a day. It is a normal distribution. What would be the mean of the data...

Full problem: -The scores for a standardized reading test are found to be normally distributed with a mean of 300 and a standardized deviation of 42. If the test is given to 500 students, how...

Assume the test scores are normally distributed.

If female blood pressure is normally distributed with a mean of 114 and standard deviation of 19.8, find p12 and p77

I am just confused on how to find the standard error without having a standard deviation

This is the full question: A quick survey of peanut butter prices had standard deviation and mean of $0.26 and $3.68, respectively. Compute the area for a peanut butter jar costing between $3...

I would like to understand how does standard deviation relate to the spread of data

what percentage of patients have a hos stay between 6 and 7 days don't round answer. Standard deviation is 1.9

please show how to get the answer of D) with steps : Consider the following information for three stocks, A, B, and C. The stocks' returns are positively but not perfectly positively...

Suppose that scores on the mathematical portion of the SAT college-entrance examination have a mean of 500 with a standard deviation of 100 and are normally distributed. A university that Brad wants...

I don't understand the formula and how to use it to solve this problem

I am struggling with this homework for a stats course. The teacher is very unclear and I cannot afford to fail. Any help would be appreciated it

The standard error of the sample mean is calculated to $1,475.73. The president wants to be able to estimate mean cost to within $1,500 of the true population mean with a probability of 80%. How many...

Group A (n = 12) has a mean score of 7.42. Group B (n = 12) has a mean score of 6.00. Standard deviation for scores across all participants is 1.369. Group A's mean is significantly higher than Group...

The scores of 2500 students on an exam have an approximately normal distribution with mean of 52 points and standard deviation of 11 points. Estimate how many students more than 52 points. If necessary,...

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