In a clinical study, volunteers are tested for a gene that has been found to increase...

In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability that a person carries the gene is 0.1. Assume independence. (a) What is the probability that five or more people need to be tested to detect two with the gene? (b) What is the expected number of people to test to detect two with the gene?

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milcah answered 1 year ago

For a comparison of two study guides for a mathematics course, 14 student volunteers were found....

For a comparison of two study guides for a mathematics course, 14 student volunteers were found. They were randomly assigned, 7 to study guide A, and 7 to study guide B. Following a two-day period of independent study, the students were examined on the material. The students received the following scores (out of 100): Study Guide A: 95 96 97 80 92 97 95 Study Guide B: 72 73 80 69 78 74 73 Use a permutation test to test...

In a study of color perception, 356 men are tested, and 39 are found to have...

In a study of color perception, 356 men are tested, and 39 are found to have red/green color blindness. 1. n ˆ p ( 1 − ˆ p ) = 2. ˆ p = 3. Is n ˆ p ( 1 − ˆ p ) ≥ 10 ?( yes or no) 4. The margin of error is use the 85 % confidence level 5.Construct a 85 % confidence interval for the percent of men in general population who are color...

In a clinical study of a test devised to detect colorectal cancer it was found that...

In a clinical study of a test devised to detect colorectal cancer it was found that 13% of people without cancer received a positive result (false positive) and 8% of people with cancer received a negative result (false negative). According to the American Cancer Society, the lifetime risk of developing colorectal cancer is about 1 in 22 (4:49%) for men and 1 in 24 (4:15%) for women. According to the World Bank the population of the U. S. is 50:52%...

1. Brody and Miller discussed the clinical depression study that tested hypericum and Zoloft to illustrate...

1. Brody and Miller discussed the clinical depression study that tested hypericum and Zoloft to illustrate which one of the following points? A) clinical depression is treatable by both naturopathic and allopathic techniques B) drug companies need to develop more SSRI medications to combat depression C) hypericum and Zoloft are equally effective in treating clinical depression D) the inclusion of a placebo group is an important part of clinical trials 2. Which one of the following is a central thesis...

In a study of perception, 146 men are tested and 27 are found to have red/green...

In a study of perception, 146 men are tested and 27 are found to have red/green color blindness. (a) Find a 90% confidence interval for the true proportion of men from the sampled population that have this type of color blindness. confidence interval enter your answer in the form a,b (numbers correct to 3 decimals) (b) Using the results from the above mentioned survey, how many men should be sampled to estimate the true proportion of men with this type...

In a study of perception, 143 men are tested and 24 are found to have red/green...

In a study of perception, 143 men are tested and 24 are found to have red/green color blindness. (a) [2 marks] Find a 91% confidence interval for the true proportion of men from the sampled population that have this type of color blindness. (b) [2 marks] Using the results from the above mentioned survey, how many men should be sampled to estimate the true proportion of men with this type of color blindness to within 1% with 97% confidence?

In a study of perception, 108 men are tested and 12 are found to have red/green...

In a study of perception, 108 men are tested and 12 are found to have red/green color blindness. (a) [2 marks] Find a 91% confidence interval for the true proportion of men from the sampled population that have this type of color blindness. (b) [2 marks] Using the results from the above mentioned survey, how many men should be sampled to estimate the true proportion of men with this type of color blindness to within 3% with 96% confidence?

In a study of vehicle ownership, it has been found that 30% of U.S. households do...

In a study of vehicle ownership, it has been found that 30% of U.S. households do not own a vehicle, with 46% owning 1 vehicle, and the remaining owning 2 or more vehicles. The data for a random sample of 192 households in a resort community are as follows: 57 owned 0 vehicles, 104 owned 1 vehicle, and the remaining owned 2 or more vehicles. When testing (at the 5% level of significance) whether the vehicle-ownership distribution in this community...

1. In a study of vehicle ownership, it has been found that 30% of U.S. households...

1. In a study of vehicle ownership, it has been found that 30% of U.S. households do not own a vehicle, with 46% owning 1 vehicle, and the remaining owning 2 or more vehicles. The data for a random sample of 192 households in a resort community are as follows: 57 owned 0 vehicles, 104 owned 1 vehicle, and the remaining owned 2 or more vehicles. When testing (at the 5% level of significance) whether the vehicle-ownership distribution in this...

a busy social life has been found to increase happiness in participants who are experincing low...

a busy social life has been found to increase happiness in participants who are experincing low levels of stress, but decrease happoiness in participants who are experiencing high levels of stress .what is this an example of? a)moderation b)mediation c)neither moderation nor mediation d)semi partial correlation 2)what is the sobel test used for? A) To acssess the significant of the direct effect in moderation analysis .B) To assess the significant in mediation. C) to assess the significant of the interaction...

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