Q1) Probability histogran curve of percentage of (P)z<2.83 is:

a) .99.77%

b) 99%

c) 0.23%

d) 50%

Q2) Recognize the statement below that is not true

a) Standard deviation is an absolute value

b) Standard deviation can be negative

c) In some instances, standard deviation can be 0

d) Standard deviation is the amount of deviation away from the mean

Q3) A team of advanced practice nurses who administer patients with Fibromyalgia(FM) were able to disprove original data claiming that 55% of adults with Fm don't get the suitable treatment advice from their specialists. After doing a three year study among 1000 patients, the nurses were able to refuse null hypothesis and indeed illustrate that not 55% ,but only 205 of adults with Fm instead believed they were not getting the appropriate treatment from their specialists.20% of 1000 patients equals the sample mean of 200 patients .At a σ =6 patients , next step is for nurses to display confidence with results. As such, suitable 95% confidence interval t-test would be:

a) 195<µ <212

b) 199.686<µ <200.314

c) 190.686<µ <210.5

d) 190.1 <µ <211.1