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In a random sample of 22 ?people, the mean commute time to work was 33.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a? t-distribution to construct a 90?% confidence interval for the population mean μ. What is the margin of error of μ?? Interpret the results?
The confidence interval for the population mean μ is
The outcome of the toss is announced to II. Then II must guess whether I chose the fair or biased coin. If II is correct there is no payoff. If II is incorrect, she loses 1. Draw the game tree.
a researcher uses a repeated-measures study to compare two treatment conditions with a set of 20 scores in each
the finished subassembly 2 must be inspected. A list of activities, their predecessors, and their durations. Draw a project diagram (network) for this project? What is the total project time?
1.using your own words what is statistical variability? why is it important for researchers to understand the
(a) Assuming that the glass bulb transmits all incident visible radiation, what is its efficiency? The efficiency is defined as the ratio of the visible radiant power to the consumed electrical power. (b) Determine the efficiency as a function of ..
What events occurred in these months that may have caused such an extreme performance in the stock's return and describe and analyze the monthly returns using Stata's statistical and graphics capabilities.
the average power of a generic drug used for the common cold should be 5.0 0.1 mg cc so that it can be sold in
the distance between major cracks in a highway follows an exponential distribution with a mean of 5 miles.a what is the
Generalizations of the linear-by-linear model (7.11) analyze association between ordinal variables X and Y while controlling for a categorical variable that may be nominal or ordinal. The model with ordered scores {ui} and {vj } is a special case ..
Set up the competing hypotheses such that rejection of the null hypothesis supports the visitor's belief.
The statistical technique used in the regression analysis. The sum of squares is a mathematical approach to determining the dispersion of the data points.
Descriptive statistic results from quarterly sales figures over a 18 year period (73 qtr) are below. Please interpret the standard Deviation and Median in terms of sales results,
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