Company reported that u. s. residents aged 18 to 24 years spend an average of 32.5 hours per month using the internet on a computer.13 you wonder if this it true for students at your large university because so many students use their smartphones to access the internet. you collect an srs of n = 75 students and obtain sample mean = 28.5 hours with s = 23.1 hours. 95% confidence interval = (23.19,33.81), use this interval to test whether the average time for students at your university is different from the average reported at 0.05 significance level

Which statements are true of the graph of h(x) = ^3 square root of x-4 ? check all that apply.the domain of h(x) is the set of all real numbers. the range of h(x) is the set of all real numbers. for all points (x, h( h(x) exists if and only if x – 4 0. the graph of h(x) is a translation of f(x) down 4 units. the graph of h(x) intercepts the x-axis at (4, 0).

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias