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In order to determine the average amount of unburned hydrocarbons pro duced by a particular brand of carburetor (adjusted in what is believed to be the optimal way), a random sample of 35 carburetors was taken, and the amount of unburned hydrocarbons recorded. The three largest and three smallest values were 1.7, 2, 4.1 and 7.9, 8.2, 9.3. The average amount was computed to be 5.7 with a sample standard deviation of 0.9. The manufac turer suspects that the distribution of unburned hydrocarbons is not nor mal.
(a) Construct an 88% confidence interval for the average amount of unburned hydrocarbons for the entire population of this brand of car buretor.
(b) Construct an 88% prediction interval for the amount of unburned hydrocarbons produced by the next carburetor tested.
(c) Construct an interval that with 90% confidence will cover 90% of the population.
A business invests $10,000.00 in a savings account for 2 years, At the beginning of the second year, an additional $3500.00 is invested, At the end of the second year, the account balance is $15,569.75. What is the annual interest rate?
You have been asked to help plan a data collection process to answer the two problem areas. Briefly outline a plan to: Collect qualitative data about how the current services are delivered
write a 3- to 5-page paper that includes the following based on your chosen virtual organizationq1. identify hardware
what is the probability of having a length of gestation less than or equal to 36 weeks given that an infant is low
Comparing the lifetimes of two brands of penlight batteries, a researcher has randomly selected 10 batteries of brand A and 10 of brand B, then subjected each battery to the same usage test. Given the lifetimes listed below and using the 0.05 lev..
The problem now is to decide which contractor to choose. B has indicated that for an- other $20 million he could do the job in 18 months, and you have said that you would be indifferent between that and the original proposal.
Heights are sampled of kids from three schools. Using a 0.05 significance level, if when looking at ANOVA results, your p-value is 0.04, what can you say about your sample data? no minimum word count.
question the wester refineria company statistician wants to estimate the proportion of customers who use a credit
Do these data indicate that the population mean percentage increase in corporate revenue is greater than the population mean percentage increase in CEO salary?
the following graph shows the population of washington d.c. in 2000 and in 2010. what is wrong with this graph? draw a
The standard deviation of the differences d for the paired sample data s d = ____________
Let X1,..., X4 be binary. Draw the independence graphs corresponding to the following log-linear models. Also, identify whether each is graphical and/or hierarchical (or neither).
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