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If three distinct dice are rolled, what is the probability that the highest value is twice the smallest value. Step by step explanations required.
Samples of three materials under consideration for the housing of machinery on a seagoing vessel are tested by means of a salt-spray test. Any sample that leaks when subject to a power spray is cons
Use a suitable statistical computer program to test whether the mean failure time of such light bulbs is significantly less than 300 hours. Use the 0.01 level of significance.
Calculate a point estimate for the difference between true average ICU stay for te treatment and control groups. Does this estimate uggest that there is a signiciant difference between true average
A hot topic of debate is whether the legal driving age should be raised to eighteen. From a random sample of 400 Americans, 52% favored raising the legal driving age to eighteen. Based on the data,
Assume the prices are normally distributed. At the 5% significance level can we conclude that the mean price of four-person tents has increased from the previous mean proce of $325?
Consider two urns labeled A and B. There are a total of 3 orange balls and 3 blue balls. An experiment consists of picking one ball at random from each urn and interchanging the balls. This experime
Assume that the bakery is open 250 days a year and its daily demand is estimated at 20 bags. It takes 5 days for each order of sugar to be filled. What is the optimal number of orders per year?
Specifically, 68% of Gen Y people have a say in computer purchases. Suppose you select a sample of 100 Gen Y respondents.
A local trucking company fitted a regression to relate the travel time (days) of its shipments as a function of the distance traveled (miles). The fitted regression is Time = -7.126 + 0.0214 Distanc
A bakery buys sugar in 15-pound bags. The bakery uses 5000 bags of sugar each year. Carrying costs are $20 per bag per year. Ordering costs are estimated at $5 per order. Assume that the bakery is o
Suppose we find a 95% confidence interval for the proportion of illinois residents who support the current pension reform law, and find the interval is (62.2-68.4) What percentage of te sample suppo
We select a sample of 56 oakton studens and ask if they have taken a mathe course at oakton. We find that 26% answer yes. based on this, find a 95% confidence interval for the true proportion of oak
A manufacturer's quality conrol department is testing the number of steel beams that conform to national safety regulatons. Suppose that 1000 beams are tested, and each beam has a 0.1% chance of not
What is the probability that the three pieces so obtained can be assembled into a triangle (i.e., that the length of the longest of the three pieces is less than the sum of the lengths of the other
The following observations show the number of traffic violations given for speeding on the one interstate highway going through Smallvilleby Officers Dhondt and Meridithof the Police Department over
Condé Nast Traveler magazine conducts an annual survey of its readers in order to rate the top 80 cruise ships in the world. With 100 the highest possible rating, the overall ratings for a sa
A casino game consists of a single toss of a fair die and pays as follows: if the die comes up with an odd number, the player is paid that number of dollars (i.e., $1 for rolling a 1, $3 for rolling
What is the formula for the standard error of the sample distribution when we know the population standard deviation?
Assuming that the distribution is normal for weight relative to the ideal and 99% of the male participants scored between (-53.68, 64.64), where did 95% of the values for weight relative to the idea
The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 150 sec and a standard de
The mean home price in Raleigh, North Carolina is 217,600. Assuming that the home prices are normally distributed with a standard deviation of 36,400. what is the probability that a randomly selecte
Find the P-value for this testing using Table B (t distribution critical values chart). What conclusion would you draw at the 5% significance level? At the 1% significance level?
Do these data provide convincing evidence that the mean amount of cola in all bottles filled that day differs from the target value of 300 ml? Carry out an appropriate test to support your answer an
One assumption underlying linear regression is that for each value of X there is a group of Yvalues that is normally distributed.