Test is in 3 hours, and confused on this one problem! Help please!!! There are 3 parts to this problem. Prompt: A chemical company wishes to estimate the mean number of man-hours lost per week due to employee illness. The standard deviation of time lost is believed to be .42. A) Suppose the company takes a random sample of 40 employees. With 90% certainty, what can we assert about the error in the their estimate of the true mean? Statistics homework help
You have a coin which is loaded so that the probability of tossing heads is If you toss the coin three times, what is the probability that you will obtain three tails? Round your answer correct to three decimal places.
Chicken Delight claims that 88% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 90 orders revealed that 74 were delivered within the promised time. At the 0.01 significance level, can we conclude that less than 88% of the orders are delivered in less than 10 minutes Statistics homework help
A die is loaded in such a way that an even number is twice as likely to occur as an odd number.E is the event that a number is less than 4 occurs on a single toss of the die, Find P(E) Statistics homework help
Statistics homework help by tutorteddy Standard deviation a random sample has 49 values. the sample mean is and the sample standard deviation is use a level of significance of to conduct a left-tailed test of the claim that the population mean is
A check is issued to a customer for an amount (say $100). Another business charges a percentage to cash the check for the customer. How do you adjust the amount of the check so that the customer receives the full amount after the check cashing percentage is deducted? Statistics homework help