This is statistics course and I need help with those questions. This is sampling distribution unit.

Question 2 10 pts 2. Suppose it is known that the mean number of runs scored by the White Sox last season is 3.8, with a standard deviation of 1.2 and the mean number of runs scored by the Astros last season is 4.1, with a standard deviation of 1.6. Suppose you watched 30 games from each team last season and calculated the mean for the games you watched for each team. Which of these can be used to approximate the probability that out of the games watched, the mean number of runs scored for the Astros was at least 1 run higher than the White Sox? There may be more than one answer so select all that apply. C] normalcdf(-9999, -1, -0.3, 0.365) [:I normalcde-9999, -1.918, 0,1) [:I normalcdf[1.918, 9999, O, 1) [:I normalcdl, 9999, 0.3, 0.365} Question 1 10 pts 1. By combining over 100 studies totaling over 1.7 million participants, it is found that 11% of men and 9% of women are left-handed. Suppose you were to conduct your own random survey of 100 men and 100 women. What is the probability that your survey would nd a higher proportion of left-handedness in men than in women? 0 0.41 O 0.46 O 0.65 O 0.68 O 0.71 Question 8 20 pts 8. Suppose population A has a mean of 122 shekels and a standard deviation of 6. Population B has a mean of 117 shekels and a standard deviation of 8. You sample 18 scores from population A and 32 scores from population B. (a) What is the mean of the sampling distribution of the difference between means (Pop A - Pop B)? [ Select ] (b) What is the standard deviation of the sampling distribution of the difference between means (Pop A - Pop B)? [ Select ] Select 1.1 1.4 (c) What is the probability that you 2.0 mean of at least 9 shekels more than your sample from population B? [ Select ] This question is adapted from Online Statistics Education: A Multimedia Course of Study (http://onlinestatbook.com/). Project Leader: David M. Lane . Rice University.Question 8 20 pts 8. Suppose population A has a mean of 122 shekels and a standard deviation of 6. Population B has a mean of 117 shekels and a standard deviation of 8. You sample 18 scores from population A and 32 scores from population B. (a) What is the mean of the sampling distribution of the difference between means (Pop A - Pop B)? [ Select ] (b) What is the standard deviation of the sampling distribution of the difference between means (Pop A - Pop B)? [ Select ] (c) What is the probability that your sample from population A has a mean of at least 9 shekels more than your sample from population B? [ Select ] Select ] This question is adapted from Online Statistics Education: AN 0.072 0.023 Project Leader: David M. Lane . Rice University. 0.500Question 8 20 pts 8. Suppose population A has a mean of 122 shekels and a standard deviation of 6. Population B has a mean of 117 shekels and a standard deviation of 8. You sample 18 scores from population A and 32 scores from population B. (a) What is the mean of the sampling distribution of the difference between means (Pop A - Pop B)? [ Select ] Select -5 (b) What is the standard deviation 2.5 difference between means (Pop A - Pop B)? [ Select ] (c) What is the probability that your sample from population A has a mean of at least 9 shekels more than your sample from population B? [ Select ] This question is adapted from Online Statistics Education: A Multimedia Course of Study (http:/onlinestatbook.com/). Project Leader: David M. Lane , Rice University