# Project #8550 - Statistics- Biostats

1) The test statistic for testing H0: mu=100 against Ha: mu 1) Determine the null and alternative hypotheses:

a-confidence interval will be wider

b-there is not enough info to determine the effect on the confidence interval

c- the confidence interval will be narrower

d-the confidence interval will be less likely to contain the parameter being estimated.

2) The body temps of adults have a mean of 98.6F and a standard deviation of .60F. Describe the center (C) and variability(V) of the sampling distribution of the sample mean for a random sample of 75 adults

a- C=98.6, V=.008

b- C=98.6, V=.60

c- C=.60, V= .07

d- C=98.6, V= .14

e- C=98.6, V=.07

3) In a clinical test with 2171 subjects, 1214 showed improvements from the treatment. Find the margin of error for the 95% confidence interval used to estimate the population proportion.

a-.0418

b- .0282

c- .0209

d-.0178

e-.0234

4) The gestation time for humans has a mean of 266 days and a standard deviation of 25 days. If 100 woman are randomly selected, find the probability that they have a mean pregnancy between 266 days and 268 days.

a-.7881

b- .2881

c- .5517

d- not enough info to determine

e- .2119

5) Based on previous studies, researchers believe that 6% of children are born w/ a gene that is linked to a certain childhood disease. If the researchers test 950 newborns for the presence of this gene, would it be unlikely for them to find fewer than 25 children w/ hte gene? Answer by calculating the approx. z-score.

a- Yes, z= -6.59

b- Yes, z= -4.41

c- No, z= -6.59

d- No, z=-4.41

e- No, z= -.005

 Subject Mathematics Due By (Pacific Time) 07/05/2013 12:00 am
TutorRating
pallavi

Chat Now!

out of 1971 reviews
amosmm

Chat Now!

out of 766 reviews
PhyzKyd

Chat Now!

out of 1164 reviews
rajdeep77

Chat Now!

out of 721 reviews
sctys

Chat Now!

out of 1600 reviews

Chat Now!

out of 770 reviews
topnotcher

Chat Now!

out of 766 reviews
XXXIAO

Chat Now!

out of 680 reviews