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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
Create raw score predictions on criterion variable for persons with Z scores on predictor value of -2,-1,0,+1,+2.
A coin is flipped e times and heads (h) or tails (t) are recorded:
Find the probability of getting a head and rolling a six
Explain your answer to someone who is familiar with the T test for a single sample, but not with the T test independent means.
The probabilities of low, medium and high compliance are 0.3, 0.4, and 0.3, respectively
By using 0.05 level of significance, is there any evidence of difference in mean life of bulbs produced by two kinds of machines?Calculate p-value and interpret its meaning.
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study so that the two factors are smoking level and gender.
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H 0 = 1/2.
A random variable has the density curve as in the graph below. Find The height of the density curve?
Determine the probability of fatal accident over lifetime? Describe your reasoning carefully. Suppose independent events. Why might the supposition of independence be violated?
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