When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted of 428 green peas and 152 yellow peas. a. find a 99% confidence interval estimate of the percentage of yellow peas.

AP Statistics Quiz 10.2 1. Name: Mrs. Toguchi wants to determine if politicians tend to have higher salaries, on average, t responders (specifically emergency medical technicians, EMTs). Independent random sa of these two professions were selected and their salaries were recorded. The data are su 2. A study of iron deficiency among infants compared blood hemoglobin levels of a random sample of infants who had been breast-fed to a random sample of infants who had been fed with standard infant formula. Here are the results. n X S Breast-fed infants 23 13.3 1.7 Formula-fed infants 19 12.4 1.8 We want to test Ho HB-HF =0, H, HB-HF 0, where μ, and μ are the population mean blood hemoglobin levels for breast-fed and formula-fed infants, respectively. (a) What additional information would you need to confirm that the conditions for this test have been met? EMTS $54,529 $5,551 100 of two-sample t e in the true (b) Assume the conditions have been met. Calculate the standardized test statistic…

The Educational Testing Service conducted a study to investigate differences between the scores of males and females on the SAT. The study identified a random sample of 562 females and 852 males that had achieved the same high score on the math portion of the test. That is, both females and males were viewed as having similar high abilities in Math. The SAT verbal scores for the two samples are:                      Females                          Males                       x̅1 = 547                          x̅2 = 525                    S1 = 83                          S2 = 78   Do the data support the conclusion that given a population of females and a population of males with similar high mathematical abilities, the females will have a significantly higher verbal ability? Test at a 0.02 level of significance. What is your conclusion?

A research group conducted an extensive survey of 3138 wage and salaried workers on issues ranging from relationships with their bosses to household chores. The data were gathered through hour-long telephone interviews with a nationally representative sample. In response to the question, "What does success mean to you?" 1543 responded, "Personal satisfaction from doing a good job." Let p be the population proportion of all wage and salaried workers who would respond the same way to the stated question. Find a 90% confidence interval for p. (Round your answers to three decimal places.)lower limit upper limit