Question 11 1 pts Suppose the mean math SAT score is 490, with a standard deviation of 100. What is the test score when its z score is -2. [Hints: z score = (test score - mean)/standard deviation.] O 300 O 350 O 290 O 280 O 480 NextThe ages of a sample of 85 participants in a survey are summarized as a frequency distribution as shown in the table below: Class Class Cumulative Interval frequency frequency (0, 5] 6 6 (5, 10] 7 13 (10, 15] 17 30 (15, 20] 23 53 (20, 25] 18 71 (25, 30] 10 (30, 35] 4 85 What is the missing value in the Cumulative frequency column? O 79 O 81 O 73 O 77 72Let X equal the number of typos on a printed page with a mean of 3 typos per page. What is the probability that a randomly selected page has at least two typos on it? You can use the following Table for your calculations: 1. 2.10 2.20 2.30 2.40 2.00 2.00 2.70 2.00 2.90 3.00 0.1225 0.1100 0.1003 0.000? 0.0321 0.0743 0.00m 0.0600 0.0550 0.0400 0.3300 0.3540 0.3309 0 300'! 0.20?3 0 2574 0240? 0.2311 0.2140 0.1991 0.0406 0.622? 0.5900 0.569? 0.5430 0.5104 0.0036 0.11005 0.4460 0.4232 0.0300 0.8194 0.?903 0.??3? 01500 0.?350 0.?141 0.6019 0.0006 0.0472 \"Ni-ID! 0 0.8009 0 0.5512 Q 0.6532 0 0.9008 0 0.7005 Question 17 1 pts John has 5 business suits and will travel to Stoney for a business convention the first 3 days of next week. How many ways can she choose suits for Monday, Tuesday and Wednesday if he wears a different suit each day? 0 60 55 O 65 50 O 70Question 16 1 pts Suppose X~Unif(a = 30, b = 70). Find P(X s 20). Oo O0.1 O 0.4 O 0.2 0 0.3Question 7 1 pts It is given that Z is a standard normal random variable with a mean of O and a standard deviation 1. Find P(Z > -3). You can use the following Table for your calculations: Kg. \"table any for z is the area under the standard normal mm to 1:11! left of z. 1 13.01: am 0.02 13.03 a.\" 9.05 Di 11.07 am was 4.1 0.0010 0.0009 0.0009 {LEEDS 0.0008 mm 0.0mm 0.0033 0.1111? EM? -9. CLIIIH 91013 DJMH 0.0012 01.012 0.0911 0.001: 9.!!!\" 01.010 9.0310 3.9 0.553? I135!\" 5399? {1.5533 [LEE-B 0.5535 {1.3535 0.9983 0.5550 D35!!! 3.]. 0.9990 0.9991 9.9991 9.9991 H.999! 9.9991 9.9992 0.9992 0.9993 0.9993 0 0.9776 0 0.9987 0 0.9786 0 0.8887 O 0.9083 The number of cars sold per week was recorded over a period of 65 weeks. The results are given in the frequency table below. Find the mode of number of cars sold per week over the 65-week period. _I I-mm