A recent television news station reports that the average Body Mass Index (BMI) (a measure of a person’s body composition) for males is 10kg/m2. A local university believes that this is unusually low and suspects that males are actually higher than their claim. They conduct a study with 20 undergraduate males randomly selected from their campus. A sample mean of 16.5kg/m2 with a standard deviation of 3.2kg/m2 was obtained. Using an alpha of.05 is there enough evidence to warrant rejection of the news station’s claim of 10kg/m2?? a. Write your hypotheses for this scenario.  b. Is this a one tailed or two tailed test?  i. Why?  c. What statistical test would be used for this scenario?  i. Explain why.

Q: Students at a high school cut an average of 3.3 classes per month. A random sample of 125 seniors…

A: Null Hypothesis: H0: μ=3.3 Alternative Hypothesis: H1:μ>3.3 Given information:…

Q: Almost all medical schools in the United States require applicants to take the Medical College…

A:

Q: sports writer wished to see if a football filled with helium travels farther, on average, than a…

A: Given that ; The mean yardage for group 1 x¯1=30 yards   s1=9 yards. The mean yardage for group 2…

Q: An industrial company claims that the mean pH level of the water in a nearby river is 6.8. You…

A:

Q: a certain country the heights of adult men are normally distributed with a mean of 66.4 inches and a…

A: According to the given information in this questionWe need to find the what percentage of this​…

Q: Walleyes found in lake Windermere have a mean length of 18.4 inches with a standard deviation of 4.2…

A:

Q: According to a research paper, the carbon monoxide exposure of someone riding a motorbike for 5 km…

A: From the provided information, Mean (µ) = 18.4 ppm Population standard deviation (σ) = 5.3 ppm X~N…

Q: A tool company claims that the mean number of defective screws they produce per box is 72. The mean…

A:

Q: Do vegetarians and non-vegetarians have significantly different mean diastolic blood pressures? A…

A: It is given that, A sample of 40 vegetarians have a mean blood pressure of 72.9, with a standard…

Q: Based on collected data, the human body temperature is normally distributed with a mean of 98.20…

A: Given information Population Mean (µ) = 98.20 deg Standard Deviation(σ) = 0.75 deg P( X > 100.4)…

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

A:

Q: An endocrinologist is interested in the effects of depression on the thyroid. It is believed that…

A: Given:

Q: A local police department made an effort to determine the average speed of automobiles travelling…

A:

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: To calculate: The required sample size

Q: According to a survey, working men reported doing 62.7 minutes of household chores a day, while…

A: The sample statistics for all men and all women who spend time doing household chores are given…

Q: he mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wonders if young…

A: a) The hypothesized mean is 69 inches.

Q: Arsenic occurs naturally in some ground water and can be toxic. A mean arsenic level of μ=9μ=9 parts…

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

Q: Using traditional methods, it takes 9.0 hours to receive a basic flying license. A new license…

A: Given information- Hypothesized mean µ = 9.0 hours Sample size (n) = 17 Mean x̅ = 9.2 hours Standard…

Q: A survey found that​ women's heights are normally distributed with a mean62.2in. and standard…

A: It was stated that a survey found that​ women's heights are normally distributed with a mean62.2in.…

Q: company has surveyed 40 customers who shop on a particular online commerce platform and the company…

A: Given that  Mean = 23 , Standard deviation = 14

Q: Suppose the average golfer drives the ball around 225.55 yards with a standard deviation of 8.82.…

A: Assume that the random variable x denotes the distance of balls drove by the golfer.

Q: The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 48 years…

A: Solution: Given information: n1= 29000  Sample size of white population n2= 96000  Sample size of…

Q: A factory that manufactures bolts is performing a quality control experiment. Each object should…

A: Sample  size n = 51 Sample  mean x = 15.06 SD o = 0.29 u = 15

Q: On their website, a property management company states that the mean monthly rent for apartments on…

A: Here is given that population mean is 650 Sample mean is 642 and standard deviation is 17   and n is…

Q: The population standard deviation for the competitor is known to be 0.70.7 mpg. Test the company’s…

A: We want to find null hypothesis,  alternate hypothesis and test statistics

Q: Normal blood sugar levels are less than 100 mg/dL after fasting for at least eight hours. A sample…

A:

Q: for a particular diamond mine ,80% of all the diamonds fail to qualify as gemstones grade. a random…

A: Given data, n=113 p=80%=0.80 q=1-p=0.20 Standard deviation=?

Q: A tool company claims that the mean number of defective screws they produce per box is 72. The mean…

A:

Q: A weight loss clinic with 250 clients reported an annual mean loss of 24.5 pounds with a standard…

A: The objective of this question is to construct a 95% confidence interval for the true population…

Q: A grocery store's sales experience indicates that its daily apple sales follow a normal distri-…

A: (b) Obtain the cut off point for the top 10% of all daily apple sales. The cut off point for the top…

Q: An automobile manufacturer claims that its car has a 37.9 miles/gallon (MPG) rating. An independent…

A: population mean()=37.9sample size(n)=140Mean()=38.2standard deviation()=1.2significance level()=0.01

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 trucking company determined that the distance traveled per truck per year is normally​…

A: Solution-: Let, X= The distance traveled per truck per year Given: We find, P[ either less than…

Q: The diameter of a mason jar is 3 inches but can be as large as 3.05 inches and as small as 2.95…

A: From the question we'll find the value of Cpl. While we have given the UCL = 3.05 and LCL = 2.95…

Q: The amount of time it takes students to travel to school can vary greatly depending on how far a…

A:

Q: We have just conducted a study comparing cognitive development of low- and normal-birthweight babies…

A: The hypotheses are given below: Null hypothesis: H0: µ1 = µ2 Alternative hypothesis: HA: µ1 ≠ µ2…

Q: In a certain country the heights of adult men are normally distributed with a mean of 68.8 inches…

A: Suppose the random variable x defines the height of adult men.

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Let, X= The number of hours of sleep on a weeknight. μ=6.9, standard deviation=σ=1.5 We want to…

Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…

A:

Q: Many cheeses are produced in the shape of a wheel. Because of the differences in consistency between…

A: