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One women told us she had read a report that for every 100 babies born there were 6 more boys than girls. If we were to randomly pick a child from a representative group, what is the probabilety
In a survey of a group of 60 families, it is found that 38 families own a dog, 45 own a cat, and 26 own both a dog and cat. what is the probability that a family selected at random from the surveyed
Weight watchers take a poll of 250 members and finds that 95 of them include exercise with their diet program while the rest do not. Find a 99% confidence interval for the proportion of all members
Use the spreadsheet to determine the total profit for each of these corner points. Then use this information to identify an optimal solution.
A contractor, Susan Meyer, has to haul gravel to three building sites. Susan wishes to determine how much to haul from each pit to each site to minimize the total cost.
Formulate a spreadsheet model for this problem. (b) Graph the feasible region. Use this graph to identify all the corner points.
Let f(t) be the probability density function for the time it takes you to drive to school in the morning, where t is measured in minutes. Express the following probabilities as integrals.
The table gives population densities for ring-necked pheasants (in number of pheasants per acre) on Pelee Island, Ontario. (a) Describe how the rate of change of population varies.
What is the probability that the store will have to refund the money to its December 17 customers?
There are 3 coins in a box. The probability of getting head is 2/3 for two of them, while for remaining it is 1/2. A coin is chosen at random and tossed 3 times, showing head in each case. What is t
For the most recent year available, the mean annual cost to attend a private university in the United States was $20,082. Ninety-five percent of all students at private universities pay less than what
The value of x currently is 50, but there is an opportunity to increase x by spending some money now. What is the maximum amount Barbara should spend to increase x to 75?
You are given the following payoff tyable (in units of thouands of dollars) for a decision analysis problem without probabilities. Which alternative should be chosen under maximax criterion.
Consider the relationship reported for the Quadriceps strength index 120°/s and the Hop index (r = 0.744**, p = 0.000). What do these r and p values indicate related to statistical significance an
Which variable has the weakest relationship with the Quadriceps strength index 120°/s? Provide a rationale for your answer.
Without using numbers, describe the relationship between the Hamstring strength index 120°/s and the Triple hop index.
Is this r value significant? Provide a rationale for your answer. Consider r = 1.00 and r = -1.00. Which r value is stronger? Provide a rationale for your answer.
What is the r value for the relationship between Hamstring strength index 60°/s and the Shuttle run test? Is this r value significant? Provide a rationale for your answer.
Draw a rough map that shows the location of Texas oil fields, refineries, and distribution centers. Add arrows to show the flow of crude oil and the petroleum products through distribution network.
You roll a single die numbered from 1 to 6 twice. What is the probability of rolling a six the first time and an odd number the second?
Conduct the test giving statistics, the test statistic and the P-value. What type of error could we have made in our conclusion?
State the hypotheses. State the level of significance. Conduct the test giving statistics, the test statistic and the P-value.
Conduct the test giving statistics, the test statistic and the P-value. (Show your work). What type of error could we have made in our conclusion?
Is there a comparison between the percentage of sunshine per month and the high/low average temperature and precipitation per month? Please defend your answer using the comparisons of the graphs.
The following shows the impact of three different types of Head Start Program for young children on three randomly selected groups. Analyze if group difference is significant enough using ANOVA.