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Suppose that 10% of all adults jog. An opinion poll asks an SRS of 400 adults if they jog.
a) What is the sampling distribution of the proportion p^ in the sample who jog?
b) According to the 68-95-99.7 rule, what is the probability that the sample proportion who jog will be 7.3% or greater?
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
You take a random sample around town and calculate a p-value for your hypothesis test of 0.0913. What is the appropriate conclusion? Conclude at the 5% level of significance.
Illustrate that probability distribution of X satisfies properties of a discrete probability distribution.
Compute β-error of test in part (a) if true difference in mean burning rate is 2.5 centimeters per second.
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
A university club consists of 4 men and 6 women. Two members are chosen at random without replacement. Let X = 0 if first person chosen is male, 1 if first person chosen is female. Y = 0 if second person chosen is male, 1 if second person chosen i..
The lengths of pins produced by a machine follow a normal distribution with mean 2.54 cm and standard derivation 0.04 cm.
The American Automobile Association checks the prices of gasoline before many holiday weekends.
Income Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana.
What is the 95% confidence interval for the true average number of hands per hour during peak hours?
Scientist would like to know if mental health clients of private versus public service agencies differ on Global Assessment of Functioning (GAF) scores and on Satisfaction with Services (Satisfaction). She has collected data for 34 clients from a ..
A researcher uses hypothesis test to estimate H0 µ= 80. Which combination of factors is most probable to result in rejecting null hypothesis?
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