Let Z be a standard normal random variable. Use the calculator provided, or this table, to determine the value of c. P(1.07 < Z< c) = 0.1269 Carry your intermediate computations to at least four decimal places. Round your answer to two decimal places.

Let Z be a standard normal random variable. Use the calculator provided, or this table, to determine the value of c. P(Zsc) =0.1685 Carry your intermediate computations to at least four decimal places. Round your answer to two decimal places.

A recent study has shown that 68% of parents allow their children to ride their bicycles without using a helmet.   If we randomly select 25 parents, what is the probability that exactly 18 of the parents allow their children to ride their bicycles without using a helmet? Compute your solution as a decimal and round your final answer to four decimal places. P(exactly 18) =  __________

Let x be a random variable that represents blood glucose level after a 12-hour fast. Let y be a random variable representing blood glucose level 1 hour after drinking sugar water (after the 12-hour fast). Units are in milligrams per 10 milliliters (mg/10 ml). A random sample of eight adults gave the following information. Σχ - 64.2; Σ ? = 528.24; Ey = 90.4; Ey² = 1063.88; Exy = 741.77 6.2 8.6 7.0 7.5 8.3 6.9 10.0 9.7 y 9.7 10.3 10.9 11.5 14.2 7.0 14.6 12.2 Find the equation of the least-squares line. (Round your answers to three decimal places.) Find the sample correlation coefficient r and the sample coefficient of determination r. (Round your answers to three decimal places.) r = 2 = If x = 7.0, use the least-squares line to predict y. (Round your answer to two decimal places.) y = Find an 80% confidence interval for your prediction. (Round your answers to two decimal places.) lower limit mg/10 ml upper limit mg/10 ml Use level of significance 1% and test the claim that the…

Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant D ipe Order Accurate 339 272 243 121 Order Not Accurate 39 59 34 11 IG 656 The probability of getting an order from restaurant C or D or an order that is not accurate is. (Round to three decimal places as needed.) Project ...pptx Enter your answer in the answer box and then click Check Answer. Check Answer Clear All All parts showing étv A 1,449 48 41 MAR

Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 475 randomly selected adults showed that 65% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)

TF.9 Let Z be a standard normal random variable. Find... a) P(-1.35 ≤ Z ≤ 2.48) b) the value of z so that P(Z ≥ z) = .1230