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A local children's boutique specializes in formal wear for young girls. It has recently hired a new seamstress. To assure the dresses have standard sizes, twenty samples of each 12 dresses that were labeled 3T were sampled. The average length from shoulder to hemline measured 21 inches with a range of 0.5 inches. A sample has just been taken with the following lengths: 21.25, 22.0, 21.5, 20.75, 21.25, 21.35, 21.35, 21.35, 21.35, 21.35, 21.35, and 21.35. Is the new seamstress performing at an acceptable quality level?
Toledo, OH has been experiencing improved economic growth following huge capital investments from companies like Chrysler. You have just been hired by RGP, an agency for facilitating business expansion and location in the Toledo metropolitan area.
What is the probability that a randomly selected monthly cell phone bill is more than $100?
Findout the normal model for the given proportions. The professor has every student toss a coin 50 times also calculated the proportion
Could you please explain in words how you figure out deciles, quartiles, kurtosis, skewness in Excel? How do you find the sum count, largest, and smallest in Excel?
For a group of 10 men subjected to a stress situation, the mean number of heartbeats per minute was 126, and the standard deviation was 4. Find the 95% confidence interval of the true mean.
expectation of the statistic that was proposed by Statistician - Based on the information collected in Tasks 1-8, which of the two statistics produces values which tends to be more concentrated about the expectation of the measurement?
A polling company obtains an alphabetical list of names of voters in a precinct. They select every 20th person from the list until a sample of 100 is obtained.
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05
In comparing the two variances below, what is the test value and what are the degrees of freedom that should be used?
Critically illustrate out the purpose of developing frequency distribution? Describe the relationship between the relative frequency and the cumulative frequency.
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