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1. In a family with two children, determine the probability distribution for the number of girls. What is the expected number of girls?
2. Suppose that 65% of the families in a town own computer. If eight families are surveyed at random,
a) What is the probability that at least four own computers?
b) What is the expected number of families with computers?
3. Use the z- score tables to find the value of-
a) P (z < 1.42) =
b) P (z < - 2.671) =
4. Calculate the mean of a set of data with a standard deviation of 5.7, given that a value of 125.2 has a z-score of 2.31.
5. The daily discharge of lead from a mine's tailings is normally distributed, with a mean level of 27 mg/L and a standard deviation of 14 mg/L. On what proportion of days will the daily discharge exceed 50 mg/L?
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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