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a) Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
b) Use the Empirical Rule to find what two values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12.
Calculate sample proportion and then also calculate a 99% confidence interval for true population proportion, p.
The weight of the first orange minus the weight of the second orange) is a random variable with standard deviation and individual outcomes are uncertain but happen in a predictable manner through time.
Test out an suitable hypothesis also state your conclusion. Make sure the suitable assumption as well as conditions are satisfied before you proceed.
Create a 90% confidence interval for mean score on this placement exam for all students.
Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Which is the probability that the median of the sample is between $17 and $20?
Evaluate the standard deviation - use the conservative value for the degrees of freedom, Assume the two groups are independent and the data are approximately Normal. Let µ 1 and µ 2 represent the mean heart rates we would observe for the entire po..
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
Is there evidence of a significant difference in the proportion who get their news primarily from newspapers between those 36 to 50 years old and those above 50 years old? (use α = 0.05)
Compute the variance and standard deviation of the number that will arrive within two days.
What control chart(s) would you use for this data and what are the final control limits?
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