lbaejk2672 lbaejk2672

16-12-2022
Mathematics

Answered

Researchers report that, on average, freshmen who live on campus gain 15 pounds during their first year in college. You survey 10 of your friends and find that the average weight gain in the first year was 16.2 lbs (s.d. = 2.6). How does weight gain among your friends compare to the national average?
Compute the test statistic.

Answer :

Other Questions

you go to vegas with $50 to spend on the roulette table. every time you place a bet, you bet $5 on red which has a 0.47 probability of winning. if you win, you

a researcher is studying whether average gpa is dependent on whether the students are in a 2-year college, public university, or private university. the researc

Determine if the Percentages given in the following statements are likely a parameter or a statistic. a) 33% of 120 workers at a particular bike factory were pa

In this section we modeled the world population from 1900 to 2010 with the exponential function P(t) = (1.43653 ✕ 109) · (1.01395)^t, where t = 0 corresponds to

estimate true average astringency with 95% confidence when tannin concentration is 0.64, and do so in a way that conveys information about reliability and preci

A random sample of 100 lightning flashes resulted in a sample average radar echo duration of .81 sec. Assume that the observations are random sample from the no

a subset of {1, 2, ... , n} is round if it is non-empty and the average (arithmetic mean) of its elements is an integer. show that the number of round subsets o

the weights for newborn babies is approximately normally distributed with a mean of 5.7 pounds and a standard deviation of 1.5 pounds. Use the Cumulative Z-Scor

john averages 58 words per minute on a typing test with a standard deviation of 11 words per minute. suppose john's words per minute on a typing test are normal

A) Find the equation for the plane containing the points (0,0,1), (1,2,3), (2,4,5), and (4,8,11). B) consider the tangent plane to the surface z = x2 + xy - 3y