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Question: City A has a population of 4 million, and city B has 6 million. Both cities have the same proportion of women. A random sample (with replacement) will be taken from each city, to estimate this proportion in each of the following case, say whether the two samples give equal good estimates, and if you think one estimate is better than the other, say how much better it is.
a) A 0.01% sample from each city.
b) A sample of size 400 from each city.
c) A 0.1% sample from city A, and a 0.075% sample from city B.
Parts. A company manufacturing electronic components for home entertainment systems buys electrical connectors from three suppliers.
Use the given contingency table to (a) find the expected frequencies of each cell in the table, (b) perform a chi-square test for independence, and (c) comment on the relationship between the two variables.
suppose a committee of 3 people is to be selected randomly from a group consisting of 4 men and 5 women. what is the
Calculate the mean, median, mode, and midrange of the data. Show your work. If your data set contains too many data points to show the work explain in detail how you calculated the mean, median, mode and midrange.
When we standardize the values of a variable, the distribution of standardized values has mean 0 and standard deviation 1. Suppose we measure two variables.
Average total daily sales at a small food store are known to be $452.80.- A random sample of 12 days shows = $501.90 and s = $65.00. Using α = 0.05, is the sampling result significant? Explain.
suppose 1568 of 2033 registered voters sampled said they planned to vote for the republican candidate for president.
What is the probability that a single student, randomly chosen from those taking the ACT, scores 21 or higher? What is the probability that the mean score x of a SRS of 50 students is 21 or higher?
A property has a net rent (cash flow or net income) of $1.5m per year and is selling at a cap rate of 8.5%. What is the price of the property?
Construct a frequency distribution that has 5 classes, and draw:
Delayed jobs normally results in lost business, which estimated to be C2 per job per week.Determine the optimum production rate?
the owner of the doughnut shop has been paying attention to the number of customers who come through the shop. she has
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