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With the below question, I believe that I am required to do a Hypothesis Test. However, I am unsure how to conduct this in order to answer the below question properly. Could you please help on how to do this hypothesis test? The n = 191. Specifically, I am really unsure what the null hypothesis and alternative hypothesis is.
"Based on casual observation, my sense is that out biggest shopper segment is established adults above 40 with a significant amount of annual disposable income (i.e. with disposable incomes between $80,001 and $100,000 per year). Can you establish whether this conjecture is true?"
Mounting-hole distances. Figure 27.10 (page 27-23) displays a record sheet for 18 samples of distances between mounting holes in an electrical meter. The data file adds and s for each sample.
Statistical Quality in an Organization
in a survey 1864 out of 2246 randomly selected adults in the united states said that texting while driving should be
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a tire that lasts more than 80,000 miles?
A dice is thrown thrice. What is the probability that the largest score that turns up is three times the smallest?
a newspaper article reported that a poll based on a sample of 1150 residents of a state showed that the states
What type of t test should be used to decide if there was a significantly lower number of purchases made while the signs were displayed? Using the results provided, tell me if the results were significant (and why)?
Suppose we have the following data: From a normally distributed population we take a sample of size 25, the mean of the sample is 2.2 and the sample standard deviation is 0.42.
1) We test the null hypothesis H0: μ = 10 and the alternative Ha: μ ≠ 10 for a normal population with σ = 4. A random sample of 16 observations is drawn from the population and we find the sample mean of these observations is x = 12. The P-value is c..
Non directional/ Are reoffending and drugs related? Directional/ Are reoffending and drugs inversely related, such that drugs decrease as reoffending increases?
Thanksgiving spending, Part II. Exercise 4.12 provides a 95% confidence interval for the average spending by American adults during the six-day period after Thanksgiving 2009: ($80.31,$89.11).
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