I only have 50 mins please answer the question as fast as you can. Thanks! 4 questions each no need to show solutions

QUESTION 1 1:1 If the weight of male high school students closely follows the normal distribution with a mean of 155 pounds and a standard deviation of 6.5 pounds, what range of of weights included the middle 911% of the males in the high school? C) 13?.5 pounds 150.5 pounds C) 120.4 pounds 132.4 pounds C) 1158.8 pounds NOB pounds C) 154.3 pounds 1?5.? pounds QUESTION 4 Determine the mean and standard deviation from the histogram shown. 100 80 Frequency 2 4 6 8 10 Score OH = 4.22 , 0 = 1.30 OH =5.73 , 0 = 3 OH =3.21 , 0 = 1.77 OH =2.07 , 0 = 1.44QUESTION 5 3 Determine the standard deviation for the following set of data 2, 4, 10, 6, 6, 8, 5,1 OU = 2.23 0 0 = 2.09 O 0 = 3.77 0 0 = 2.96QUESTION 7 3 A store offers the following coupons with dollar amounts. Determine the average savings for all the coupons. $ Dollar amount Number of coupons $6 20 $12 10 $15 10 $20 6 $30 2 O $12.65 O $13.35 O $11.88 O $13.65