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The number of chocolate chips in an? 18-ounce bag of chocolate chip cookies is approximately normally distributed with mean 1252 and standard deviation 129 chips.?
(a) What is the probability that a randomly selected bag contains between 1000 and 1400 chocolate? chips??
(b) What is the probability that a randomly selected bag contains fewer than 1025 chocolate? chips?
?(c) What proportion of bags contains more than 1200 chocolate? chips??
(d) What is the percentile rank of a bag that contains 1050 chocolate? chips?
Half asleep one morning, you grab 2 socks at random and put them on. Find the probability you end up wearing 2 blue socks.
How do you find the mean of a probability distribution?
Hot dogs Are hot dogs that are high in calories also high in salt? The figure below is a scatterplot of the calories and salt content.
use the one-proportion z-interval procedure to find the required confidence interval. be sure to check the conditions
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
Students revealed an average cost of books of $370 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
Sstandard deviation was found to be 3.3 minutes. Is there evidence to reject the manager's claim at alpha =.02? Perform an appropriate hypothesis test.
You have selected a die at random from the two dice described below Determine the probability that you selected die A.
What is the minimum sample size you should use to assure that your estimate of will be within the required margin of error around the population p?
Think of an important characteristic that you would look for in a potential romantic partner, such as humorous, intelligent, attractive, hardworking, religious, and so on.
Order pizza with this new crust again. Calculate a 98% confidence interval for the proportion of customers who would order the new thin crust pizza again.
a pair of dice is rolled 5 times. find the probability that a total of 11 occurs twice before a total of 5
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