Let 2 be a standard normal random variable. Calculate the following probabilities using the ALEKS calculetor. Round your responses to at least three decimal places. (a) P(Z > 1.56) - I (b) (z < 194) - (c) P(-0.92 < z < 2.08) - 0

Given the following probability distribution for the number of semesters of Math a (non-Math major) college student will take as they earn their degree: x:number of semesters of Math  1 2 3 4 P(x) 0.25 0.45 0.20 0.10   What is the probability that a randomly selected (non-Math major) college student will have taken exactly 3 semesters of Math?   Show how you calculated your result here (type in what you typed on your calculator or computer, etc) Calculation: __________   Now type in your final simplified or rounded answer, if necessary round your answer to four decimal places. P(exactly 3 semesters of Math) = _____________

The accompanying table describes results from groups of 10 births from 10 different sets of parents. The random variable x represents the number of girls among 10 children. Use the range rule of thumb to determine whether 1 girl in 10 births is a significantly low number of girls.   x P(x)0 0.0041 0.0132 0.0363 0.1154 0.2065 0.2386 0.2017 0.1168 0.0459 0.01310 0.013   The maximum value in this range is __ girls.  (round to one decimal places as needed)   The minimum value in this range is __ girls.  (round to one decimal place as needed)   Based on the​ result, is 1 girl in 10 births a significantly low number of​ girls? Explain.   A. ​No, 1 girl is not a significantly low number of​ girls, because 1 girl is within the range of values that are not significant.   B. ​Yes, 1 girl is a significantly low number of​ girls, because 1 girl is below the range of values that are not significant.   C. ​Yes, 1 girl is a significantly low number of​ girls, because 1 girl is above the…

How were the answers of 0.5000, 0.3810, 0.1586, and 0.1586 attained?

solve the following

Consider a discrete random variable X that can assume three values 1, 2, and k with respective probabilities 0.5, 0.25, and 0.3. If E(X) = 1.9, what is the value of k? Select one: а. 5 b. 2 с. 1 d. 3 e. 4

Let Z be a standard normal random variable. Calculate the following probabilities using the ALEKS calculator. Round your responses to at least three decimal places. (a) P(Z s 0.68) = [D (b) P(z > -1.90) = (c) P(1.10 < Z < 2.20) =