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A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 291 lb. and a variance of 2704. (Give your answers correct to four decimal places.)
(a) If a truck can carry 4100 lb. and 26 appliances need to be picked up, what is the probability that the 26 appliances will have an aggregate weight greater than the truck's capacity? Assume that the 26appliances represent a random sample.
(b) If the truck has a capacity of 7800 lb., what is the probability that it will be able to carry the entire lot of 26 appliances?
Assuming that the variability is unchanged (i.e., σ = 6), is there sufficient evidence to suggest that the strength of the product has increased at the 1% level of significance?
Chi-square test for independent of attributes - A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations?
A U.S. Travel Data Center survey of 1500 adults found that 42% of respondents stated that they favor historical sites as vacations. Find the 99% confidence interval of the true proportion of adults who favor visiting historical sites as vacations.
a survey was conducted at a local high school to determine the number of hours that a student studied for the final
Find the value of sample covariance in linear regression model
Critically discuss the assumptions, if any, regarding a Chi-square test? What are the assumptions to apply linear regression?
By using significance level a = .05, and suppose a normal distribution what does evidence conclude?
Use MegaStat's output for simple linear regression to determine the regression equation
Precisely (that is, using specific numbers) what does the central limit theorem tell us about the sampling distribution of sample means for samples of this size from this 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?
In the context of this scenario, what would be the consequences of making a Type I error?
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
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