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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.
A marketing specialist is assessing the effectiveness of two types of formats for TV commercials. For the data above, test the appropriate hypothesis using the independent t test and alpha=.05.
What is the probability of rolling 2 ones, 1 two, 4 threes, 3 fours, 2 fives, and 1 six? What is the probability that there will be at least three dice showing the same number?
Suppose that ten of the books are fiction, ten are non-fiction, and ten are poetry, and Alice wants to read at least one book of each type. Now how many different ways can she decide which book t
Prove, for each positive integer n, the number n! can be written as a sum of n terms n!=a1+a2+a3+.....+an, where 1=a1<a2<<an and all the numbers a1, a2,....., an are factors of n!. (Hint: ind
Suppose that the group consists of six men and six women. How many different ways can the group seat themselves, if we insist that each person sit between a man and a woman?
There are 1000 natural numbers a1, a2,...., a1000. Prove that of the numbers 3a1, 3a2,...., 3a1000, there must be 56 of them which have the same remainder when divided by 19.
Use a combinatorial argument to show that an = an-1 + an-2 for a ≥ 3. (Hint: what happens to a person on the end of the row?) Prove that an is a Fibonacci number for every n.
Let E be the event that my two cards came from the same deck, and let F be the event that my two cards are the same suit. Are the events E, F independent? Why or why not?