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A census by the county dog control officer found that 18% of homes kept one dog as a pet, 4% had two dogs, and 1% had three or more. If a salesman visits two homes selected at random, what s the probability he encounters
a) no dogs?
b) some dogs?
c) dogs in each home?
d) more than one dog in each home?
The probability of drawing two diamonds (to complete a flush) after discarding the 5 and 7.
Assuming normal populations with equal standard deviations, use the 0.025 level of significance in testing the engineer's claim.
the lifetimes in years of a certain kind of electronic component is a random variable having probability density
Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of women physicians at the university health system exceeds 27.9%?
Joey read in his biology book that fish activity increases with water temperature, rest is attached because. It includes a picture
SPSS for Beginners 6a: One-sample t-tests and Confidence Intervals
Assume that the process is in control and that the population of all jar fills is normally distributed.
Develop a forecast of enrollment next semester using exponential smoothing with a a= 0.2. Assume that an initial forecast for the first semester was 120 (so the forecast and the actual were the same.)
a club consists of 42 women and 33 men.a how mant ways can the club choose a chairperson and recording secretary?b how
What is this type of sample called?- Do you think the results of these polls represent the opinions of all readers of the magazine? Explain.
At the 0.05 level of significance, evaluate the claim that has been made by the shoe com- pany. Identify and interpret the p-value for the test.
Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. Conduct a hypothesis test. The null and alternative hypotheses are:
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