The distribution of sample means for bi-monthly employee income at a particular company for samples of 70 employees is normal with a mean of $5921 and a standard deviation of $219. You take a random sample of 70 employees from the company and find that their mean bi-monthly income is $5668. How many standard deviations is the sample mean from the mean of the distribution of sample means?

Q: set of data has a histogram that is extremely skewed, what does this tell you about the data and how…

A: A set of data has a histogram that is extremely skewed, we have to estimate the distribution of the…

Q: She would like to examine the mean SI score, p, for the population of all smokers. Previously…

A: NOTE: As only the first question is visible, I am attempting the first question only.   The null…

Q: Suppose your monthly earnings are normally distributed with a mean of $1700 and a standard deviation…

A: Let μe and μs be the the mean of monthly earnings and spendings respectively. Let σe and σs be the…

Q: A recent poll found that 59% of adults believe the state of moral values is poor. For 400 randomly…

A: Here, n = 400 and p = 0.59

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: Suppose that the distribution of the scores of students in Statistics Assignment 1 is roughly…

A: From the provided information, Mean (µ) = 85 Standard deviation (σ) = 5 X~N (85, 5)

Q: On a standardized examination, Laura received a score of 83, which was exactly 2 standard deviations…

A:

Q: What would be the effect on the standard deviation of the set of scores 13, 14,15, 15, 16, and 17 if…

A: We have to find effect of membres on standard deviation.

Q: Suppose a statistics instructor believes that there is no significant difference between the mean…

A: Complete solution and answer is given in the image uploaded below  Thanks!

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Sophia, a yoga instructor at Yoga for You, selected random samples of 210 students from a nearby…

A: Given that, the t-value is 2.63. The sample sizes are n1=210 and n2=210.

Q: if a student scored 88 points on a test when the mean score was 80.2 and the standard deviation was…

A: From the provided information, Mean (µ) = 80.2 Standard deviation (σ) = 5.7

Q: 500 freshmen at Crescent High School took an algebra test. The scores were distributed normally with…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase…

A: Given Mean =66 Standard deviation=5

Q: Suppose that the distribution of scores on an exam is closely described by a normal curve with a…

A: we have a formula for calculating the percentile in case of normal curve  which is Mean+Z*standard…

Q: Suppose that the distribution of a set of scores has a mean of 47 and a standard deviation of 14. If…

A: Here, mean is 47 and a standard deviation is 14.

Q: The summary data from study demonstrates a stronger relationship between how many minutes per day a…

A: Given : A standard deviation is a measure of how dispersed the data is in relation to the mean. Low…

Q: One year, many college-bound high school seniors in the US took the SAT. For the verbal portion of…

A: According to the given information in this question We need to find the percentage of students would…

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…

A: QUESTION 1 SOLUTION: (less than 54) Step 1: Convert to z-score Formula:z=σx−μ​where;x = raw scoreμ =…

Q: If an adult male is told that his height is within 2 standard deviations of the mean of the normal…

A: If an adult male is told that his height is within 2 standard deviations of the mean.

Q: Suppose you are told that a computer programmer in Portugal who makes $809.40 has a z-score of -0.50…

A: Solution: It is given that a computer programmer in Portugal who makes $809.40 has a z-score of…

Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

A:

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…

A:

Q: The SAT scores (X) of the students in the U.S. in 2011 are normally distributed with a mean 1500 and…

A: The objective of this question is to find the percentage of students who scored below Darth Vader on…

Q: Karen’s first psychology exam score is ‑1 (negative one) standard deviation from the mean in a…

A: It is given that, the z-score for Karen’s first psychology exam is -1.

Q: If the mean of the number of sales of houses is fifty-six, and the standard deviation is thirty-six,…

A: We have given, The mean number of sales of houses is x¯=56. And the standard deviation is σ=36.

Q: mar is trying out to be a firefighter.  On the written exam, the mean of everyone who takes the test…

A: given data, μ=54.5σ=3.1Omar scores exactly 0.75 standard deviations above the mean z=0.75raw score…

Q: On Bob's last history test, he had a score of 92.  Bob's z-score was -0.5, and the test's standard…

A: Solution -Given that Score in History test be X=92 Z- Score=-0.50 Standard deviation= 6 Find mean…

Q: Suppose that the mean weight for men 18 to 24 years old is 170 pounds, and the standard deviation is…

A: Mean()=170standard deviation()=20

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the…

A: Mean = 118.3 Sd =25 N= 25 Hypothesis test Ho :μ = 110Ha:μ > 110

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: The provided information is:

Q: What are the null hypothesis (H) and the alternative hypothesis (H) that should be used for the…

A: Given that mean SI score for the population of all smokers is 90. Test is that whether the value of…

Q: One of the z-score formulas will help on this question. Scores on the SAT test are normally…

A: Given data,Mean μ=500sd σ=100Score X=450z-score =?

Q: The variance of a sample of 169 observations equals 576. what is the standard deviation of the…

A: Variance of a sample(s2)=576sample size(n)=169

Q: Suppose the scores of students on a Statistics course are Normally distributed with a mean of 440…

A: