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1. What is the probability of
(a) Getting exactly 4 heads and 2 tails in 6 tosses of a balanced coin?
(b) Getting 3 sixes in 4 rolls of a fair die? 2. (a) If 20% of the students entering college drop out before receiving their diplomas, ?nd the probability that out of 20 students picked at random from the very large number of students entering college, less than 3 drop out.
(b) If 90% of the bulbs produced in a plant are acceptable, what is the probability that out of 10 bulbs picked at random from the very large output of the plant, 8 are acceptable?
Using significance level of 5%, can you say that NBA players are smarter than the average population? What is the value of the test statistic?
Can the researcher conclude that humidity has a significant effect on eating behavior? Use a two-tailed test with α=.05. Compute the estimated d and r2 to measure the size of the treatment effect.
What is the probability that the industry will locate in both cities and in neither city?
The value of the z score in a hypothesis test is influenced by a variety of factors. Assuming that all other variables are held constant explain how the value of z is influenced by each of the following: (a) increasing the difference b/w the sampl..
in order to determine any difference between the average daily sales of two branches of a department store the data
Christianity teaches that God exists in three persons:
What is the value of the slope of the least squares regression line for these data? Round your answer to at least four decimal places.
if x1 and x2 are independent random variables x1 has a chi-square distribution with 3 degrees of freedom and x1 x2 has
1 the number of traffic accidents that occur on a particular stretch of road during a month follows a poisson
a researcher is studying the effect of three different row spacing on the yields of four different varieties of cotton.
The mean is 75 and the standard deviation is 6. If 1200 students took the test, approx how many students would be expected to score between 69 and 81?
An official of the Iowa Department of Highways wants to compare the useful life, in months, of two brands of paint used for striping roads. The mean number of months Cooper Paint lasted was 36.2 with a standard deviation of 1.114 months.
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