Suppose that the time in minutes it takes a student to complete an assignment is normally distributed with a mean 55 and variance 100 then the 35th percentile of the average time it takes a random sample of 49 students to complete the assignment is closest to O a. 51. O b. 59. О с. 49. O d. 54. Ое. 56.

Q: Suppose the selling price of various houses in Livingstone follow a normal distribution with mean…

A: Given information: μ=276000σ=32000

Q: Suppose that a recent poll found that 65​%of adults believe that the overall state of moral values…

A:

Q: A psychologist is interested in the score of college students on the GRE. In the general population…

A:

Q: Suppose 1% of students drink more than 3 cups of coffee each day. To check this claim, a researcher…

A: Given that p = 0.01 ,n=133 What is the sampling distribution of the sample proportion? What is the…

Q: If 80% of the applicants are able to pass a driver's license proficiency road test. Find the mean,…

A:

Q: Suppose that the distribution of Writing SAT scores from your state this year is normally…

A: Given,For male, mean (μ) =480 and standard deviation (σ) =110.For female, mean (μ) =500 and standard…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: Sample mean (x̅1) = 42.8Sample mean (x̅2) = 40.9Sample size (n1) = 34Sample size (n2) = 41Standard…

Q: Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to…

A: Given: n1 = 75 X1 = 6.1 S1 = 1.7 n2 = 75 X2 = 4.3 S2 = 0.9 Sp = 1.10 Formula Used: Sp =…

Q: The National Center for Health Statistics reports that the average systolic blood pressure for males…

A: Here, The claim to be tested is "The medical director of a large company believes the average…

Q: A surveyfound that women's heights are normally distributed with mean 63.8 in and standard deviation…

A: The normal distribution: A continuous random variable X is said to follow normal distribution if the…

Q: Suppose that a scientist seeks to compare the ability of a new hand sanitizer to eliminate…

A: Assumptions for paired sample t–test:   The selected samples are simple random sample. Each…

Q: Suppose the age a student graduates from Salem State is Normally distributed. If the mean age is…

A:

Q: Suppose that students who finished JHS in a public school get an average of 5.6 hours of sleep each…

A: Mean(µ) = 5.6 Standard deviations (σ) = 1.7 n = 35

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: The mean is 105 and the variance is 81.

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A: Given that, mean = 400 standard deviation =  24 n = 144

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: A petroleum engineer estimated the chances of drilling a dry well to be around 50% , and chances of…

A: The probability distribution of the amount of oil and the associated probability of drilling is as…

Q: Suppose some data with values between zero and ten is approximately normally distributed, with mean…

A: Solution-: Given that data values between 0 and 10 is approximately normally distributed with mean=5…

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and a…

A: Given that the shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and…

Q: Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to…

A: Given values are,  Sample size n1=75  sample size n2=75 sample mean x1=6.1 sample mean x2=4.3 sample…

Q: Suppose that the average cell phone bill at Bellevue University is $38.90 per month with a standard…

A: Given that, μ=$38.90σ=$3.64n=44 The mean standard deviation of sampling distribution of sample mean…

Q: A medical researcher administers a new medication to a random sample of 70 flu sufferers, and she…

A: From the provided information, The degree of freedom = n1 + n2 – 2 = 70 + 50 – 2 = 118 As, the…

Q: 3. A mathematics professor wants to determine whethern there is difference in the final averages…

A: From the provided information,

Q: Suppose the selling price of various houses in Livingstone follow a normal distribution with mean…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Data were collected on the top 1,000 financial advisers. Company A had 239 people on the list and…

A: Given: Sample size;  n1 = 16       &     n2 = 10            Sample SD;   S1 = 589     & S2 =…

Q: suppose that for sexually active male drosophila fruit flies in a particular genetic lab, the mean…

A: Given : μ=38.9x = 62.5n = 24s = 14.1

Q: Suppose that the height distribution of students in your class was normally distributed with mean 68…

A:

Q: suppose that for sexually active male drosophila fruit flies in a particular genetic lab, the mean…

A: We have to answer question based on simple experiment.

Q: Suppose that the height of women in Dakar, Senegal is normally distributed with mean 58 inches and…

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

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

Q: Suppose you are testing H0: μ = 21 vs. H1: μ > 21, from a normal distribution with σ² = 28 and n =…

A:

Q: a.) What probability (in percentage) of students scores are less than 49 on the exam?

A: Given: chemistry exam score = X X follows a normal distribution with mean of 60 and a standard…

Q: If the variance of a national accounting examination is 900, how large a sample is needed to…

A:

Q: Suppose the variance of a sample is 7.3. Find the standard deviation. Round to two decimals.

A: Given : Variance , s2 = 7.3

Q: uppose that a recent poll found that 53​%of adults believe that the overall state of moral values is…

A: Given data, p=53%=0.53 n=400 Compute Mean and Standard deviation.

Q: Suppose each stock in Andre’s portfolio has a correlation coefficient of 0.40 (ρ = 0.40) with each…

A: From the given information, it is clear that, In the existing portfolio, the standard deviation is…

Q: A geologist is making guesses about the mean length of fossil teeth of a certain species found in a…

A: From the provided information,

Q: Suppose that chemistry exam scores are normally distributed with a mean of 24 and a standard…

A: Let X denote exam scores. Given that X follows N(mean = 24, SD = 4)

Q: The quality control manager at a company manufacturing company believes that the mean life of a…

A: The mean is 81 and the variance is 64. The standard deviation is square root(variance)=sqrt(64)=8.

Q: A personal trainer states that the distribution of running times (in seconds) for a 100-meter dash…

A: Let X be a continuous random variable of of running times (in seconds) for a 100-meter dash is…

Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…

Q: A psychologist is interested in the conditions that affect the number of dreams per month that…

A: To calculate the Z score The following information is given, μ=5σ=4n=36X¯=8

Q: what would you expect the shape, center and spread of the sampling distribution of the proportion of…

A: Let p be the proportion of the student population has a meal plan at a certain University.  Given…

Q: 2) If the readings on thermometers are normally distributed with a mean of 0°C and a standard…

A: The mean and standard deviation are μ=0,σ=1 The p-value is 5% from left or 0.05 The z-score for the…

Q: Fran is training for her first marathon, and she wants to know if there is a significant difference…

A: We want to test the hypothesis

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

Q: Suppose the statistics department at a large midwestern university has offered the same course in…

A:

Q: Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to…

A: WHen 2 samples, 2 means, and 2 standard deviations are given, then we test for equality of means of…

Q: Suppose​ 36% of​ movie-goers say that horror is their favorite movie genre. If a random sample of…

A: The known values are, Let X denote the number of​ movie-goers that prefer​ horror and it follows…