mathematics test is applied to 29 students from the UPN people who obtain an average grade of 75.6 with a standard deviation of 5.23 It is known that the correct value of the test must be greater than µ= 74. Is there enough evidence to prove that Is the student average greater than the population average in the group? Consider a significance level of 0.05

Q: Humerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A: Solution: Given information: n= 100 Sample size  x= 5.6 Sample mean s= 0.25 Sample standard…

Q: 50 high school students were asked how many hours they study per day. The mean was 1.5 hours, with a…

A: The mean is 1.5 and the standard deviation is 0.5 hours.

Q: The average number of accidents at controlled intersections per year is 4.1 and the standard…

A: Given,sample size(n)=52sample mean(x¯)=4.6population standard deviation(σ)=3.5population…

Q: Medical research suggests that systolic blood pressure in adults is approximately normally…

A: Denote X as the blood pressure in adults. It is given that X is approximately normally distributed,…

Q: If a sample has a mean of 150 and a standard deviation of 9, what is the value in the data set that…

A: Given,mean(μ)=150standard deviation(σ)=9Z-score=1.58

Q: An article appeared in an Australian newspaper. It described a study of academic performance and…

A: State the hypotheses. That is, there is no evidence to conclude that the average attention span for…

Q: A study was made of a sample of 25 records of patients seen at a chronic disease hospital on an…

A: Given data : Sample size = 25 Sample mean = 4.8 Sample standard deviation = 2 Population mean = 4…

Q: umerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A:

Q: The combined math and verbal scores for students taking a national standardized examination for…

A: Given  mean of 670 and a standard deviation of 220.

Q: The average score on the standard I.Q test is 100 with standard deviation 15. The     Mensa group…

A:

Q: Suppose the mean height of women age 20 years or older in a certain country is 62.7 inches. One…

A: From the provided information, Population mean (µ) = 62.7 Sample size (n) = 100 Sample mean (x̅) =…

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.36 and a…

A:

Q: A random sample of 36 cans of soda is obtained and the contents are measured. The sample mean is…

A: Given Population mean μ=12, n=36, sample mean x̄=12.05, s=0.11

Q: From the scores in subject statistics for 8 students, it was found that the mean score is 73 and the…

A: We have given that,  Sample mean (x̄) = 73,  standard deviation (s) = 5.15 and sample size (n) = 8…

Q: ppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.42 and a…

A: Given data,Mean μ=8.42sd    σ=1.52P(6.9<X<9.94)=?

Q: An advocacy group claims that the mean braking distance of a certain type of tire is 75 feet when…

A: According to the provided information,

Q: A sample of 29 body temperature with a mean of 98.20oF. Assume that the population standard…

A: We have given that  Sample size n= 29 Sample mean = 98.20 Population standard deviation = 0.62

Q: The distribution of average wait times in drive-through restaurant lines in one town was…

A:

Q: An article appeared in an Australian newspaper. It described a study of academic performance and…

A:

Q: When 40 people used Weight Watchers for one year, their mean weight loss was 3.0 lbs and their…

A: The test hypotheses are given below: H0:μ=0 lbsHa:μ>0 lbs From the given information, the…

Q: A random sample of 50 public school teachers in Georgia had a mean annual salary of $48,300. Assume…

A: The hypotheses for the test is given below.Null hypothesis:H0: µ = $50,000Alternative hypothesis:H1:…

Q: A simplified model for the movement of the prize of a stock supposes that on each day the stock’s…

A:

Q: The mean score on the exit examination for an urban high school is 66with a standard deviation of…

A: Given  μ=66, σ=6, n=9  We want to find the sample mean(x̄)

Q: A social scientist claims that the average adult watches less than 26 hours of television per week.…

A: The general formula for the test statistic is, z=x¯-μσn

Q: The combined math and verbal scores for students taking a national standardized examination for…

A:

Q: an examination, the marks are normally distributed with mean of 60.7 and standard deviation of 12.3…

A:

Q: An industrial engineer is conducting a time study for a work element. The select time is 4.5…

A:

Q: In a certain country the heights of adult men are normally distributed with a mean of 67.2 inches…

A: normal distribution  μ = 67.2σ = 2.3normal distribution P(64<x<75) = ?

Q: Part III. What conclusion may be drawn? [Select] W. There is sufficient evidence to reject Ho. The…

A:

Q: The average score on the verbal portion of the college entrance exam is 453, with a standard…

A: From the provided information, Sample size (n) = 137 Sample mean (x̅) = 502 Population standard…

Q: The average breaking strength of the steel rods is specified to be 18.5 thousand pounds. To test…

A: To test:H0:μ=18.5H1:μ≠18.5

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.4 and a…

A:

Q: Humerus bones from the same species of animal have approximately the same length-to-width ratios. It…

A: Formula : Standard error = s/√n

Q: mathematics test is applied to 34 students from the UPN people who obtain an average grade of 75.6…

A: Given that  Sample size n =34 Sample mean =75.6 Standard deviation =5.23

Q: In 16 women with diabetes, the morning blood sugar mean was 49.4  with a standard deviation of 24.0.…

A:

Q: Dr. Gomez conducted an experiment on studying alone vs. in a group. Twelve participants were…

A: The given values are nA=6,x¯A=74.167,SDA=7.305,nG=6,x¯G=57.167,SDG=6.646.