Given that x is a normal variable with mean μ = 51 and standard deviation σ = 6.6, find the following probabilities. (round your answers to four decimal places.) (a) p(x ≤ 60) 0.9131 correct: your answer is correct. (b) p(x ≥ 50) 0.4404 incorrect: your answer is incorrect.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Which compound inequality could be represented by the graph?

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.