He found that the table stated his probability as 0.1131. Determine whether Alex made an error in his calculation and explain.

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: From the given information we have The null and alternative hypothesis are H0 : µ = 132H1: µ >…

Q: Janice measures the circumferences of the trunks of trees in the woods near her house for a science…

A: The mean is 72 inches and the standard deviation is 5 inches.

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: CNNBC recently reported that the mean annual cost of auto insurance is $1019. Assume the standard…

A: Given that  Mean = 1019 Standard deviation = 238 Sample size = 72

Q: expected number of students who read the book online.

A: Students purchased hard copy =P(H) = 60% =0.60 Students print out from the web =P(W)= 25% = 0.25…

Q: he distribution of heights of adult males has a mean of 69 inches and a standard deviation of 4…

A: Solution-: Let, X= The distribution of heights of adult males Given: (inches) We find, P[ he…

Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

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: The first Stats exam had a mean of 70 and a standard deviation of 10 ​points; the second had a…

A: The first Stats exam had a mean of 70 and a standard deviation of 10 ​points; the second had a mean…

Q: A set of n = 6 scores has a mean of M = 10. Another set of scores has n = 4 and M = 20. If these two…

A: Given, First set has mean = 10 and n =6 Second set has mean = 20 and n =4

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: On a nationwide math test, the mean was 63 and the standard deviation was 10. If Roberto scored 85,…

A: GivenMean(μ)=63standard deviation(σ)=10score(x)=85

Q: Emily and Hillary began arguing about who did better on their tests, but they couldn't decide who…

A: Note: Hi there! Thank you for posting the question. To avoid the Plagiarism issue we have used the…

Q: Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the…

A: From the provided information, Sample size (n) = 10 Sample mean (x̅) = 6.9 Sample standard deviation…

Q: A survey of attendance records shows that high school seniors average 10.5 sick days per school year…

A: Let, x denotes sick days per school year of high school seniors. It is given that- x~N10.5,5.25

Q: A researcher showed the mean of weights of college football players to be 200 pounds with a standard…

A:

Q: For a standardized psychology examination intended for a psychology. Major is the historical data…

A: sample size(n)=35mean(μ)=510standard deviation(σ)=170

Q: On five exams, Rachel has a mean score of 80 points. Her lowest score was 50.  If this score is…

A:

Q: Temperatures in a city are distributed approximately normal, with a mean of 69 degrees Fahrenheit…

A:

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: standardized algebra test in different states. Kaitlyn takes the test for Virginia and scores a 458.…

A:

Q: Three potential employees took an aptitude test. Each person took a different version of the test.…

A: The z-score will be used to answer the given question. The formula for the z-score is z=x-μσ that…

Q: For a set of 250 measurements the mean is 110 and the variance is 144, how many of these…

A: Mean = μ = 110 Variance σ2 = 144Standard deviation = σ = σ = 12

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: her wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will be…

A: given: mean(μ)=78 sd(σ)=8

Q: A particular standardized test has scores that have a mound-shaped distribution with mean equal to…

A: It is given that the mean is 128 and the standard deviation is 17. The raw score of Tom is 160.

Q: The scores on two standardized tests are normally distributed. The first test had a mean of 58 and a…

A: The first test had a mean of 58 and a standard deviation of 10, and the second test had a mean of 80…

Q: The scores on two standardized tests are normally distributed. The first test had a mean of 50 and a…

A: Let I will need score = k on the second test to equal a score of 62 on the first test.  z score of…

Q: Sarah​'sscore on the Stats midterm was 81 points. The class average was 76 and the standard…

A: Given that  Mean = 76 SD = 5 And the Sarah's score is X = 81

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: CO LO Translate Mikayla and April began arguing about who did better on their tests, but they…

A: Solution The one who have a  higher  score did better.