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Assume each newborn baby has a probability of approximately 0.53of being female and 0.47of being male. For a family with four children, let X equals=number of children who are girls.
a. Identify the three conditions that must be satisfied for X to have the binomial distribution.
b. Identify n and p for the binomial distribution.
c. Find the probability that the family has two girls and two boys.
The probability that the family has two girls and two boys is
What are the inequalites that define the region in the first quadrant. How about 2nd, 3rd and 4th quadrants?
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the true mean breaking strength of yarn used in manufacturing drapery material is required to be above 100 psi. from
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suppose that a and b are events defined on a common sample space and that the following probabilities are known. find
Suppose a sample of 35 surveys shows a sample mean of 17 minutes. Use = 4 minutes. Is the premium rate justified? Formulate the null and alternative hypotheses for this application.
Suppose there are two vendors and each provides 50% of the items. The lifetime (in days) of an item from the first vendor is Exp(.1), and that from the second vendor is Exp(.08). Compute the probability that a randomly picked item will last more t..
question your company sells exercise clothing and equipment on the internet. to design the clothing you collect data
It is known from previous studies that the population variances are 8.1 and 7.3 respectively. Using a level of significance of .01, is there evidence that the out of state students may be receiving lower grades? Fully explain your answer.
Make your calculation supposing a two-sided two-sample t-test with a type I error (alpha) of 0.056
a survey by accountemps asked a sample of 200 executives to provide data on the numberof minutes per day office workers
in a left-ailed test comparing two means with variances unknown but assumed to be equal the sample sizes were n1 8 and
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