# Biostatistics

23 results

### college biostatistics

if the mean bp is 110 and the standard deviation is 15 where would 95% of population be

### Biostatistics

if we select a birth at random, what is the probability the mother is 19 years of age or younger

### Biostatistics

Age(10-14)(15-19)(20-29)(30-39) (40-44) Mid 12.5 17.5 25 35 42.5 P(X=x) .003 .100 .500 .300 .097 If we select a birth at random, what is the probability the mother is 19 years or younger?

### Biostatistics

Why are the results of an independent samples test different from the results of a Tukey HSD test on the same data?

### Biostatistics

Suppose 2 rats die in the first 4hours. What is the probability that 2 or fewer rats will die in the next 4 hours.

### biostatistics

Given a population mean IQ =100 and a standard deviation of 16, for a random sample of size 64, what is the probability that the sample mean IQ will be greater than 104?

### Biostatistics

17. A research biologist has carried out an experiment on a random sample of 15 experimental plots in a field. Following the collection of data, a test of significance was conducted under appropriate null and alternative hypotheses and the P-value was determined to be ...

### Biostatistics

I need help with missing data. Does anybody know a good website that helps with missing data and the methods used to put in missing data?

### biostatistics

Seventeen people has been exposed to a particular disease. Each one independently has a 40% chance of contracting the disease. A hospital has the capacity to handle 10 cases of the disease. What is the probability that the hospital's capacity will be exceeded? a- .011 b- .736 ...

### Biostatistics

Test the potency of a drug on 20 rats. Previous animal show that a 10-mg dose of drug is lethal 5% of the time within 1st 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours. What is the probability that 3 or more rats will die in the first 4 hours.

### BIOSTATISTICS

Exercise : A machine is set up such that the average content of juice per bottle equals μ . A sample of 36 bottles yeilds an average content of 48.5cl. Test the hypothesis that the average content per bottle is 50cl at the significance level. Assume that the population ...

### biostatistics

A studyis run to estimate the mean total cholesterol level in children 2 to 6 years of age. A sample of 9 participants is selected and their total cholesterol levels are measured as follows: 185 225 240 196 175 180 194 147 223 Generate a 95% confidence interval for the true ...

### Biostatistics HW

Consider again the data in problem #6. Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42. Exercise Group N Mean Std Dev ...

### biostatistics

8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. Generate a 95% confidence interval for the difference in mean total cholesterol levels between treatments. New Drug (n=75) ...

### biostatistics

Rheumatoid arthritis (RA) is a chronic disease that affects synovial joints. About 1% of the world population suffers from this disease. A synovial test for the presence of the anti-citrullinated protein antibodies is commonly used when rheumatoid arthritis is suspected. This ...

### biostatistics

A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in persons between the ages of 18 and 29. Participants in the study are randomly assigned to one of three exercise groups - Weight training, Aerobic exercise or Stretching/Yoga...

### biostatistics

Suppose we want to design a new placebo-controlled trial to evaluate an experimental medication to increase lung capacity. The primary outcome is peak expiratory flow rate, a continuous variable measured in liters per minute. the primary outcome will be measured after 6 months...

exercise: The average number of sick days an employee takes per year is believed to be about 10. Members of a personnel department do not believe this figure. They randomly survey 8 employees. The number of sick days they took for the past year are as follows: 12; 4; 15; 3; 11...

### biostatistics

among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. Assume the number of coffee drinks per day follows a normal distribution. a. What proportion drinks 2 cups per day or more? b. What proportion drink no more than 4 cups per day? ...

### college math - biostatistics

hey... first time user and really lost. wondering if someone can help: Based on data from the Statistical Abstract of the United States, 112th Edition, only about 14% of senior citizens (65 years old or older) get the flu each year. However, about 24% of the people under 65 ...

### biostatistics

7. Consider again the data in problem #6. Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42. a)Is there evidence of a ...

### English

Everybody in my class got their paper work they have to do by the end of the week.I got mine too,so i would like you to help me with this :D? I got a paper with instructions: There are 8 students,each with different IQ.Those students received 10 medical books,(medical because ...

### Biostatistics

Hi, I have answered some questions for some homework and I've got one of them wrong. I cannot modify my answer but I would really love to know why my answer is wrong. This is the statement of the problem: n this series of questions, we examine data from a study of 158 infants ...

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