what is the critical value?
Q: What percentage of fire station response times are under 3 minutes
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Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…
A: Empirical rule: The probability that the observation under the normal curve lies within 1 standard…
Q: Low‑density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the…
A: The 68-95-99.7% Rule:For a normal distribution, the empirical rule (68-95-99.7% Rule) state that…
Q: In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with…
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Q: 0 mg/dL H₁: #0 mg/dL OA. Ho: OC. Ho: μ = 0 mg/dL H₁: >0 mg/dL Determine the test statistic. (Round…
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Q: In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw…
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Q: In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with…
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Q: Almost all medical schools in the United States require applicants to take the Medical College…
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Q: In a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with…
A: (1). Null and alternate hypotheses: The investigator is specifically interested to test whether the…
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A: It is given that, A sample of 40 vegetarians have a mean blood pressure of 72.9, with a standard…
Q: garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus…
A: From the provided information, Sample size (n) = 81 Sample mean (x̅) = 0.9 Sample standard deviation…
Q: Low‑density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the…
A: 68-95-99.7% rule:In normal distribution, the empirical rule of 68-95-99.7% rule states that 68% of…
Q: In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw…
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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: To determine the effects, researchers measured the LDL levels of 36 randomly selected men and 41…
A: Solution-: Given: For women:n1=41,x1¯=15.4,σ1=1.9 and For men: n2=36,x2¯=13.3,σ2=1.3…
Q: In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw…
A: Given Information: Sample size (n) = 36 Sample mean (x¯) = 0.7 Standard deviation (s) = 1.95…
Q: he blood platelet counts of a group of women have a bell-shaped distribution with a mean of 253.8…
A: Given data,Mean μ=253.8sd σ=61.7P(68.7<X<438.9)=?
Q: In a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with raw…
A: To find: Test statistics P value Final conclusion
Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…
A:
Q: In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw…
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Q: A random sample of 36 patients with arthritis took the drug for three months. Blood tests showed…
A: Sample mean ( x¯ ) =8.8 Sample standard deviation (s) = 3.3 Sample size (n) = 36 Claim : The drug…
Q: a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw…
A: Solution: Given information: n= 49 Sample size xd= 0.7 Difference of sample mean sd= 18.8…
Q: In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with…
A: Given Information: Sample size n=49 Mean of the differences d¯=0.3 (sample mean) Standard deviation…
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: In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw…
A: Given information: Number of subjects used for test of the effectiveness of garlic n=36 The mean of…
Q: Cholesterol levels for women aged 20 to 34 follow an approximately normal distribution with mean 185…
A: Given ,Let , random variable X be the cholesterol levels for women aged 20 to 34 The random variable…
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 number of calories consumed per day for a child is normally distributed with a mean of 1544 and…
A: The number of calories consumed per day for a child is normally distributed with a mean of 1544 and…
Q: The combined SAT scores for the students at a local high school are normally distributed with a mean…
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Q: A college placement office conducted a survey of 100 engineers who had graduated from Stanford…
A: The question is about Chebysheff's theoremGiven :Mean salary of engineers ( ) = $72000Standard…
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…
Q: Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean…
A: The detailed solution is as follows below:
Q: In 2014 the combined scores of all college-bound senior taking the SATs were approximately Normal…
A: The normal distribution is the most useful theoretical distribution for continuous variables. For…
Q: In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with…
A: Denote μ as the mean changes in the LDL cholesterol. The hypotheses to be tested are: Null…
In a sample of 87 people who have had strokes, the average cholesterol level was 258 with a standard deviation of 41.6. In order to test the hypothesis (at the 10% level of significance) that the average cholesterol level of people who have had strokes was at least 240, what is the critical value?
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- Bone mineral density (BMD) is a measure of bone strength. Studies show that BMD declines after age 45. The impact of exercise may increase BMD. A random sample of 59 women between the ages of 41 and 45 with no major health problems were studied. The women were classified into one of two groups based upon their level of exercise activity: walking women and sedentary women. The 39 women who walked regularly had a mean BMD of 5.96 with a standard deviation of 1.22. The 20 women who are sedentary had a mean BMD of 4.41 with a standard deviation of 1.02. Which of the following inference procedures could be used to estimate the difference in the mean BMD for these two types of womenIn a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.2 and a standard deviation of 1.81. Use a 0.10 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: H>0 mg/dL O B. Ho: H=0 mg/dL H:H0 mg/dL Determine the test statistic. (Round to two decimal places as needed.)In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.8 and a standard deviation of 2.04. Use a 0.10 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
- In a test of the effectiveness of garlic for lowering cholesterol, 36 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.2 and a standard deviation of 1.76. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses?In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.6 and a standard deviation of 20.7. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? A. Ho: μ = 0 mg/dL H₁: μ> 0 mg/dL C. Ho: μ = 0 mg/dL H₁: μ#0 mg/dL Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the…In a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.6 and a standard deviation of 1.92. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses?
- In 16 women with diabetes, the morning blood sugar mean was 49.4 with a standard deviation of 24.0. In normal healthy women, the mean was 47.0. From the sample information, can we conclude that the blood sugar mean in women with rheumatoid arthritis is greater than that in normal women? Assume a significance level of 0.05.Does chronic hepatitis C infection impact bone mineral density? In the general population of healthy young adults, bone mineral density is Normally distributed, and density scores are standardized to have a mean u of 0 and a standard deviation o of 1. A study examined the bone densities of a random sample of 28 adult men suffering from chronic hepatitis C infection. Their mean standardized bone density was -0.61. Does this provide strong evidence that the mean standardized bone density of adult men suffering from chronic hepatitis C infection is less than 0?Low-density lipoprotein, or LDL, is the main source of cholesterol buildup and blockage in the arteries. This is why LDL is known as "bad cholesterol." LDL is measured in milligrams per deciliter of blood, or mg/dL. In a population of adults at risk for cardiovascular problems, the distribution of LDL levels is normal, with a mean of 123 mg/dL and a standard deviation of 41 mg/dL. If an individual's LDL is at least 1 standard deviation or more above the mean, he or she will be monitored carefully by a doctor. What percentage of individuals from this population will have LDL levels 1 or more standard deviations above the mean? Use the 68–95–99.7 rule. (Enter your exact answer as a whole number.) percentage %
- In a test of the effectiveness of garlic for lowering cholesterol, 64 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.8 and a standard deviation of 2.14. Use a 0.01 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.…Almost all medical schools in the United States require applicants to take the Medical College Admission Test (MCAT). On one exam, the scores of all applicants on the biological sciences part of the MCAT were approximately Normal with mean 9.4 and standard deviation 2.6. For applicants who actually entered medical school, the mean score was 10.6 and the standard deviation was 1.7. (a) What percent of all applicants had scores higher than 11? (b) What percent of those who entered medical school had scores between 8 and 12?
