Score: 0 of 6 pts 5.4.19 a. For dlasses of 277 students,find the mean and standard...
a. For classes of "149" students, find the mean and standard deviation for the number born on the 4th of July. Ignore leap years. b. For a class of 149 students, would two be an unusually high number who were born on the 4th of July? a. The value of the mean is μ= _________. The value of the standard deviation is σ= ____________. b. For a class of 149 students, would two be an unusually high number who...
a. For classes of 162 students, find the mean and standard deviation for the number born on the 4th of July. Ignore leap years b. For a class of 162 students, would two be an unusually high number who were born on the 4th of July? a. The value of the mean is μ=____. (Round to six decimal places as needed.)
w D Mode Delay a. For classes of 245 students, find the mean and standard deviation for the number born on the 4th of July. Ignore leap years. b. For a class of 245 students, would two be an unusually high number who were born on the 4th of July? a. The value of the mean is p = 0.671233 (Round to six decimal places as needed.) The value of the standard deviation is o = 0.818165 (Round to six...
5.4/12.A. For classes of 113 students, find the mean and standard deviation for the number born on the 4th of July. Ignore leap years. b. For a class of 113 students, would two be an unusually high number who were born on the 4th of July? 5.3/17. A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 18 tablets. The entire shipment is accepted if at most 2 tablets do not...
The mean exam score for 44 male high school students is 20.1 and the population standard deviation is 4.7. The mean exam score for 58 female high school students is 19.6 and the population standard deviation is 4.1. At a = 0.01, can you reject the claim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table. Click here to view page...
The mean SAT math score in 2007 was 525 with a standard deviation of 114. An educational psychologist believes that students who take at least 4 years of English classes in High School score better on the SAT math exam. The psychologist obtains a random sample of 40 high school students who completed at least 4 years of high school English classes. The mean math exam score of these students was 540. Conduct an appropriate hypothesis test at the Alpha...
Statistics Question... (10 pts) If the mean exam score of a class was 75%, with a standard deviation of 15%, what percent of students would be expected score at or higher than 92%? Assume that the distribution of the scores is normal and the variable is random 7.
The Mean ACT score for 43 male high school students is 21.1 with a standard deviation of 5.0. The mean ACT score for 56 female high school students was 20.9 with a standard deviation of 4.7. Test the claim that male and female students have equal test scores. Test at a level of significance of 0.01 Make sure you give an answer for each of the following: a) Claim in symbols and labeled Ho or Ha and labeled as the...
The mean score on a science assessment for 59 male high school students was 319.5 and the standard deviation 2.5. The mean test score on the same test for 40 female high school students was 298.9 and the standard deviation was 1.2. At a 002, can you support the claim that mean scores on the science assessment for male high school students were higher than for the female high school students? a. Claim: ?? Ha: LTT, RTT or TTT? b?...
Part A. Score on 25 point test is normally distributed with mean 22 and standard deviation 5. You took a sample of 9 students. The mean for this group is 19.111111 Test the hypothesis that the performance of this group is different than the regular group. Use α=.05. What is the alternative hypothesis? What is the rejection region? Calculated z What is your decision? Yes or no? You believe that the group from an honors and would perform better than...