A busy restaurant determined that between 6:30 P. M. and 9:00 P. M. on Friday nights, the arrivals of customers are Poisson distributed with an average arrival rate of 4.15 per minute. *(Round your answer to 2 decimal places.) **(Round your answer to 4 decimal places.) (a) What is the probability that at least 14 minutes will elapse between arrivals? (b) What is the probability that at least 8 minutes will elapse between arrivals? (c) What is the probability that at least 1 minute will elapse between arrivals? ** (d) What is the expected amount of time between arrivals?

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.

Milk and ice cream are mixed together for a recipe. the total volume of the mixture is 1 cup. if the milk contains 2% fat, the cream contains 18% fat ,and the mixture contains 6% fat ,how much cream is in the mixture

The length of a rectangle is 5 times the width. if the perimeter is to be greater than 36 meters. what are the possible values for the width?