Recent recommendations suggest 60 minutes of physical activity per day. A sample of 50 adults in a study of cardiovascular risk factors report exercising a mean of 38 minutes per day with a standrad deviation of 19 minutes. Based on the sample data, is the physical activity significantly less tjam recommended? Run the appropriate test at a 5% level of significance.

Q: Range anxiety is one of the reasons consumers are reluctant to switch to an electric vehicle, and…

A: Given information: x 89 90 91.5 92 92.5 95 95.5 96 93 93.5 94 94 91…

Q: Recent Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested…

A: Given that Mean(µ) = 24.8 Standard deviations (σ) = 6.2

Q: he sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10…

A: Given, Sample mean (x-) = 228.2 mg Population mean (μ)= 220 mg sample size (n)= 10 sample  S.D. (s)=…

Q: In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency provides data…

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

Q: A random sample of 36 orders at a fast food restaurant was studied to determine the amount of the…

A: given data, n=36df=n-1=36-1=35X¯=15.50s=8.98claim:μ<20α=0.05

Q: Write the null and alternative hypotheses for this test. Calculate the test statistic. Find the…

A: 1. Let μ1 denotes the mean volume of diet coke can, and μ2 denotes the mean volume of regular coke…

Q: 0.063. At α = 0.05, which of the following is the correct conclusion? I. We fail to reject the null…

A: p-value associated with the resulting test statistic is 0.063

Q: Published information indicates that, on average, college students spend less than 20 hours studying…

A: t-test: If the given sample size is less than or equal to 30 and sample standard deviation is given.…

Q: o= $1000. a. State the null and alternative hypotheses. Ho: 4- Select your answer V3472 H: A- Select…

A: Given : Population mean =$3472 Population standard deviation =$1000

Q: Using traditional methods, it takes 11.5 hours to receive a basic flying license. A new license…

A: The sample size is 2020, sample mean is 11.6 hours and sample standard deviation is 1.6. The…

Q: Big babies: The National Health Statistics Reports described a study in which a sample of 305…

A: given data n =305x¯ =25.6s = 5.3α = 0.01claim : μ ≠25

Q: In a study entitled How Undergraduate Students Use Credit Cards, it was reported that undergraduate…

A: Given that, sample size n=100 sample mean credit card balance x¯=3506 Population standard deviation…

Q: Suppose that an advertisement claims the average weight loss for someone on a new fad diet is 15…

A: Given, Sample size = 18 Sample mean = 15.83 Population standard deviation = 4   Under the claim, the…

Q: Calculate the sample estimate of the standard error of the mean. Show all work.    b. Construct a…

A: Given that Sample size n = 36 Sample mean = 6.8 Sample SD = 1.2 The critical value of t at 98%…

Q: In a test of the effectiveness of garlic for lowering​ cholesterol, 64 subjects were treated with…

A: The following information is provided: Mean difference xd=0.3 Standard deviation sd=2.36…

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: Justin is interested in buying a digital phone. He visited 14 stores at random and recorded the…

A: Solution 95% confidence interval for the mean price of this model of digital phone $302.478 to…

Q: Reports on a student's ACT, SAT, or MCAT usually give the percentile as well as the actual score.…

A: Given that.   X~N( μ , ?)   μ=528     , ?=117   Z-score =( x - μ )/?

Q: there sufficient evidence at a=0.01 to conclude that their health care expenditure differs from the…

A:

Q: To study the perceptions of waiting time, a researcher conducted a survey of 100 prospective…

A: The provided information  x¯=5.2σ=1.2n=100α=0.10The critical value is zc=1.64  (from statistical…

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: If a P-value is .043, what does that mean in terms of the value obtained for the test statistic?

A: p-value is the probability of obtaining more extreme results under  null hypothesis, by more extreme…

Q: The monthly starting salaries of students who receive an MBA degree have a population standard…

A: The poulation standard deviation: The confidence level: The Margin of Error:

Q: The height of women ages​ 20-29 is normally​ distributed, with a mean of 64.3 inches. Assume σ=2.7…

A: The mean is 64.3 and the standard deviation is 2.7.

Q: survey asked 8 adults how many years of education they had. The sample mean was 12.90 with a sample…

A:

Q: he height of women ages​ 20-29 is normally​ distributed, with a mean of 64.3 inches. Assume σ=2.5…

A: From given data we have :μ=64.3,σ=2.5

Q: In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw…

A: Method: Using One sample t test

Q: Table 1.1 Mean Scores and Standard Deviations of the Study Variables Variables Means Std. Dev.…

A: The mean is calculated by adding all the observations divided by the total number of samples, it is…

Q: In a test of the effectiveness of garlic for lowering​ cholesterol, 49 subjects were treated with…

A: Given: d=before - afterd=0.8sd=15.5α=0.01

Q: Group Group Size Mean Standard Deviation Concussion 25 5784 609.3 Nonconcussion 25 6489 815.4 Is…

A: Let us consider the two sample of size n1, n2 are sample. Also the sample size is less than 30,…

Q: Chapter 3 Assignmen You have surveyed 100 randomly selected people 18 to 35 years old, and 100…

A: As per guideline expert have to answer first question three subparts only dear student please upload…

Q: During an economic crisis, the average value of homes in a community of 36 homes lost $9347 with a…

A: Given information Hypothesized mean µ = $8880 Sample size (n) = 36 Mean x̅ = $9347 Standard…

Q: aking the family to an amusement park has become ncreasingly costly according to the industry…

A: We have given that,  Sample mean (x̄) = $ 232, sample standard deviation (s) = 42 and sample size…

Q: lights off when no movement is present in a room. Historically, the cost of lighting an average…

A:

Q: Scientists experimenting with cancerous cells wish to control the number of T-cells in a petri dish,…

A:

Q: Do political science classes require more writing than history classes? The 57 randomly selected…

A: State the hypotheses. That is, there is no evidence to conclude that on an average political…

Q: What is the p-value for this sample? The significance level is a 0.005. The standard deviation is…

A: From the provided information, Level of significance (α) = 0.005 Standard deviation (σ) = 13.2…

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A: Given, As per z-distribution table, the critical value of z at 0.05 level of significance is…

Q: In a test of the effectiveness of garlic for lowering​ cholesterol, 36 subjects were treated with…

A: Given information- Sample size, n = 36 Significance level, α = 0.10 Sample mean, d-bar = 0.6 Sample…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.