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A submarine can carry 3 large missiles. The only error is in one direction (e.g. a range error but no sideways error) and the error density function is:
f(x)= (100+x)/10,000 f(x)= (100 +x)/10000 -100<x<0(100-X)/10,000 (100 -x)/10000 0<x<1000 0 elsewhere
(a) Compute the probability of a successful operation (i.e., an operation in which at least one hit is a success) if all 3 missiles are launched and a hit within 40 miles of the target is considered a success.
(b) The submarine can carry 8 missiles of a smaller size. However, a hit must be within 15 miles to be successful. The error density function is the same as for the larger missiles. Calculate the probability of a successful operation.
(c) Should the light or heavy missiles be used?
An appliance manufacturer claims to have developed a new toaster oven that consumes an average of no more than 250 W. From previous studies, it is believed that power consumption for toaster ovens is normally distributed with a variance of 324 W.
Explain the difference between the null hypothesis and the alternate hypothesis. How is the null hypothesis chosen (why is it null)? What is the importance of rejecting the null hypothesis, can we make a geneeral staement about the population base..
Past studies indicate that only 85% of booked passengers show up for their flight. Find the probability that if the airline books 150 persons for a 140-seat plane, not enough seats will be available.
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
Psychologists wanted to test whether a certain accelerated class' IQ was different than average. There were 25 students in the class; their mean IQ score was 108.
Determine the probability that pregnancy will (a) last more than 300 days; (b) less than 240 days; (c) between 250 and 282 days.
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
Standard deviation of this poll is 4%. What would be standard deviation if sample size were increased from 83 to 190?
The accomanying table is a one way, independent groups ANOVA summary table with part of material missing.assuming an equal number of subject are there in each group. What is the value of F crit, using alpha 0.05?
List at least 3 qualitative attributes of the snack food about which they might want to ask consumers. Make sure at least one of them is nominal.
It is estimated that 3% of the athletes competing in a large tournament are users of an illegal drug to enhance performance. The test for this drug is 90% accurate.
I have a problem that wants to know the sample size of Illinois republican voters, they want to know the sample size with 95% confidence and 3% margin of error, not sure how to get started.
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