Recently, after the legalization of marijuana, a simple random sample of 552 adult females showed that 129 of them used medicinal marijuana. It has been established that in 2000, 21.6% of adult females used medicinal marijuana. Use a 0.01 significance level to test the claim that the rate of medicinal marijuana use by adult females is now higher than in 2000. Use the critical value method.

Q: At 0.05 level of significance, test the hypothesis that the new procedure is much better than the…

A: Given : x1= 75 n1= 1500 x2= 80 n2= 2000 significance level, 0.05

Q: A researcher wants to determine if having a visible tattoo can significantly lower the…

A: We will be using the One-way repeated-measures ANOVA here. The Null and Alternate hypotheses are…

Q: recent year, a sample of the South American Redeye Piranha was collected by fishermen on a…

A: We have given that  Sample size n =60 Sample mean =12.88 99%confidence interval. (12.09,13.67)

Q: In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with…

A: Given information- Sample size, n = 48 Sample mean, x-bar = 3.4 Sample standard deviation, s = 18.9…

Q: When interpreting F (10, 29) = 4.78, p > 0.05, how many subjects were tested in this simple one-way…

A: The F-statistic is a ratio of two sample variances, and it is commonly used in hypothesis testing to…

Q: In a study of carbohydrate diet, an investigator wishes to test a hypothesis test for whether the…

A: Given that, mean is 5.20   and standard deviation is 1.3   n is 30 We ei use one sample z-confidence…

Q: A study was conducted to compare the amount of salt in potato chips. Random samples of four…

A: F-statistic = MSTrMSE

Q: The time married men with children spend on child care averages 6.1 hours per week (Time, March 12,…

A: The hypotheses can be constructed as: H0: µ = 6.1 H1: µ ≠ 6.1 Sample size (n) = 40 Assume level of…

Q: In a test of the effectiveness of garlic for lowering cholesterol, 43 subjects were treated with…

A:

Q: Unfortunately, arsenic occurs naturally in some ground water. A mean arsenic level of mu equals 8.0…

A: Part (a): Level of significance:In the given information, it is said that “Alpha = 0.01”. Now,…

Q: Due to the economy, are Americans staying in their first professional job longer? This was a ques-…

A: Given that,

Q: A survey across generations of workers gathered data on engagement at work. The results for a sample…

A: State the hypotheses.

Q: An ANOVA is used to evaluate the mean difference among three treatment conditions with a sample of…

A: Given Anova is used to evaluate mean difference among three treatments.So number of treatments = k =…

Q: alue for a right-tailed test using a significance level of ?=0.02.α=0.02

A: To find the z value, use the standard normal table to find the z-score which cuts off an area of…

Q: Research indicates that there may be a relationship between caffeinated coffee consumption and risk…

A: Given :       Caffeinated coffee     Depression <1 cup/wk >=1 cup/day 2-3 cups/day 4+…

Q: In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with…

A: Given that x¯=5.2s=15.6n=48 Confidence level=90% Significance level=1-0.90=0.10 degrees of freedom,…

Q: A study of serum cholesterol levels in psychiatric patients revealed that cholesterol level is…

A: The probability of observing a violent psychiatric patient is with a cholesterol levels of below 220…

Q: A regulation golf ball should weigh 45 grams. A company produces golf balls for the PGA. To help…

A:

Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…

A: Solution: From the given information, the regression equation is

Q: FIV (feline immunodeficiency virus) attacks a cat's immune system causing FAIDS (feline acquired…

A: As per our company guidelines, we are supposed to answer only the first 3 sub-parts. Kindly repost…

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

A:

Q: A researcher reports an F-ratio with dfbetween = 2 and dfwithin = 30 for an independent-measures…

A: According to the provided information, the researcher reports an F-ratio with degree of freedom…

Q: A comprehensive study conducted by the National Institute of Child Health and Human Development…

A: It is given that a study conducted by National Institute of child health and human development.

Q: When only two treatments are involved, ANOVA and the Student's t-test (Chapter 11) result in the…

A: 1. Data Setup:Traditional Lecture Scores: [36,31,38,31,31,40]Distance Learning Scores:…

Q: avalanches studied in Canada had an average thickness of u = 67 cm. A sample of 31 avalanches in the…

A:

Q: na test of the effectiveness of garlic for lowering cholesterol, 42 subjects were treated with…

A:

Q: Medical researchers conducted a study to determine whether treadmill exercise could improve the…

A: In order to determine whether the mean distance walked for patients using a treadmill is less than…

Q: The distribution of internalizing behavior as measured by the Child Behavior Checklist is normal…

A: It is given that the mean is 50 and the variance is 100.

Q: (to) What are the null hypothesesh and the alternative hypothesish What should be used to perform…

A: Let  be the mean monthly mileage of cars rented in the US.Given that,Population mean Sample mean…

Q: Suppose that you were interested in investigating the effect of a drug that is to be used in the…

A: Paired test:A paired test or a dependent test statistical test that compares the averages or means…

Q: Explain what would happen to the length of the interval if the confidence level were decreased to…

A: Here Given  Sample size=n=60 Sample mean=x¯=12.88 And From Normal table Critical values for  95 C.I…

Q: A case-control study of patients on antihypertensive drugs related an increased risk of myocardial…

A: Given that:     Occurrence of Myocardial Infraction     Yes (cases) No (controls)…

Q: a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 240…

A: Sample mean = x̅ = 240 Sample size = n = 12 Sample S.D = s = 16.5

Q: In a test of the effectiveness of garlic for lowering cholesterol, 42 subjects were treated with…

A: From the provided information, Sample size (n) = 42 Sample mean (x̅) = 2.0 Sample standard deviation…

Q: Bone mineral density (BMD) is a measure of bone strength. Studies show that BMD declines after age…

A: The difference in mean between two groups can be given as can be given from the unpaired t-test. The…

Q: Recently, a simple random sample of 572 adult males showed that 124 of them smoke. It has been…

A: Denote p as the true proportion of smokers. It is reported that 20.4% of adult smoke. Thus the…

Q: In a test of the effectiveness of garlic for lowering cholesterol, 50 subjects were treated with…

A: The given information is as follows: The mean value for difference is 3.4, standard deviation for…

Q: Avalanches can be a real problem for travelers in the western United States and Canada. Slab…

A: One sample z test: One sample z test is the hypothesis test that is used to determine whether the…

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

A:

Q: Is there a significant difference between the youth who favour lower legal drinking age from the…

A: Here From given information Claim : 40% of the youth in a city are favor of lower legal drinking age…

Q: A quality control expert at a local dairy claims that its cartoons contain more than 64oz of milk a…

A: n = 15 mu = 64 xbar = 65 s = 1.1

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.