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Two pollsters are conducting surveys to estimate the proportion of Clarkston, Michigan citizens who support a bond issue to build a sports stadium. Both pollsters use the same methods; however, their sample sizes differ. One pollster reports his results with a margin of error of ± 4; while the second reports her results with a margin of error of ± 2. What can be said about the sample sizes?
a random sample of 12 lunch orders at noodles and company showed a mean bill of 12.99 with a standard deviation of 4.6.
1. For the y and x values listed in file XR15066, obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram, (b) using a normal probability plot, (c) plotting the residuals versus the x values, and ..
find the area under the standard normal curve for the followinga pz gt 1.15b p0 lt z lt 1.58c p-1.06 lt z lt
Probability of passing a student who guesses on every question is less than 0.10. What score should be set as the lowest passing grade if each question is worth one point?
The ratio of what two numbers in the ANOVA tables gives you the F value? a. 4 and 115 b. 12.327 and 106.464c. 3.082 and .926 d. 119 and 115
How long do you exactly need to complete the other question asked? It is very critical for me.
During the last week of the semester , students at a certain college spends on the average 4.2 hours using the school's computer terminals with a standard deviation of 1.8 hours .for a random sampling of 36 students at that collage.
a survery found that womens heights are normally distributed with mean of 62.1 and standard deviation of 2.3 in. the
B is independent of C or not? Focus on probabilities assigned in the subsets, 0.05 is repeated in C, but 0.10 is repeated in B, so P(A∩C)=?
The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.
the respiratory rate per minute in newborns varies according to a distribution that is approximately normal with mean
Assuming that a plane make a safe flight if at least one-half of its engines run, determine whether a 4-engine plane or 2-engine plane has the higher probability for a successful flight.
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