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The average value of y=v(x) is 4 for 2≤x≤5 and is 10 for 5≤x≤12. What is the average value of v(x) for 2≤x≤12?
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- John calculated r -.44 for a set of n 10 pairs of values that represent the number of absences from class (X) and students midterm exam scores (Y). How much of the variability in exam scores can be predicted from the relationship with the number of absences?Larry is a 62% free-throw shooter, that is to say that anytime Larry attempts a free-throw, there is a 62% chance he will make it. Larry will attempt 70 free throws. Assume each attempt is independent of every other attempt. Let X be the number of free throws Larry makes out of 70 and let P^P^ be the proportion of the 70 attempts Larry makes. What is the mean of X?A sample of n = 11 scores has a mean of M = 55. One new score is added to the sample and the new mean is computed to be M = 53. What is the value of the score that was added to the sample?
- Which expression represents the average rate of change of the function f(x)=x²-x+1 over the interval -2≤x≤1? A B. -1-(-1) -2+1 1- (-1) 1-(-2) C. D. -1-1 1-(-2) -1-(-1) 1-(-2)CBS news reported that 4% of adult Americans have a food allergy consider selecting 10 adult Americans at random define the variable x as: x= number of people in the sample of 10 that have a food allergy a. p(x<3) b. p(x lesss than or equal to 3) c. p (x greater than or equal to 4) d. p (1 less than or equal to x less than or equal to 3)which is the score on his fifth test if the mode and the median of the five scores are equal?
- The results of a poll show that the true proportion of students who prefer the new schedule is likely in the interval (0.195,0.245). What is the point estimate of the proportion of students who prefer the new schedule?Suppose that 95% of the bags of certain fertilizer mix weigh between 49 and 53 pounds. Averages of three succesive bags were plotted, and 47.5% of these were observed to lie between 51 and X pounds. Estimate the value of X. State assumptions you make and say whether these assumptions are likely to be true for this example.One sample of n=12 scores has a mean of M=7, a second sample of n=8 scores has a M =12. If the 2 samples are combined, what is the M of the combined sample?
- A student pursuing a degree in English as a second language believes the proportion female factory workers who can't speak English is less than the proportion of male factory workers who can't speak English. To test her claim she randomly selects 373 female factory workers and out of them 43 could not speak English. She then randomly selects 215 male factory workers and out of them 65 could not speak English. Test her claim at .=0.05 to see if she was right. The correct hypotheses are: H : PF Pu (claim) H : PF 2 PM HA: PF < Pr (claim) H : PF = PM HA: PF + PM (claim) Since the level of signficance s0.05 the critical value is-1.64s The test statistic is pound to 3 places) The pvalue is round to 3 places) The decision can be made to oreject H, odo not reject í, The final conclusion is that: There is enough evidence to reject the claim that the proportion female factory workers who can't speak English is less than the proportion of male factory workers who can't speak English. There is…Larry is a 62% free-throw shooter, that is to say that anytime Larry attempts a free-throw, there is a 62% chance he will make it. Larry will attempt 70 free throws. Assume each attempt is independent of every other attempt. Let X be the number of free throws Larry makes out of 70 and let P^P^ be the proportion of the 70 attempts Larry makes. What is the mean of X? Do not Round.A sample of n = 10 scores has a mean of M = 13. After one score is added to the sample, the mean is found to be M = 12. What is the value of the score that was added?
