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For the following population of N=10 scores 14,6,8,3,9,12,1,6
a) Draw the histogram showing population distributionb) locate value of population mean in your sketch and make the estimate of standard deviationc) Calculate sum of square (SS), variance, and standard deviation for sample.
2. Compute SS, variance and standard deviation for following sample of n=4 SCORES, 4,0,1,1, (NOTE: computational formula works well with there scores).
As part of a safety check, the Keystone Cops randomly stopped 65 ambulances and checked their tire pressure. The sample mean was 32 lbs/sq. in. with a sample standard deviation of 2 lbs/sq. in. Find the 98% confidence interval for the population m..
What do you mean by degrees of feedom in statistics? Explain the concept of degrees of freedom for each of the following hypothesis tests.
It is known that in a sack of mixed bean seeds, 35% are yellow beans. Use the normal approximation to the binomial distribution to find the probability that in a sample of 400 beans there are
Construct the probability distribution for the value of a 2-card hand dealt from a standard deck of 52 cards (all face cards have a value of 10 and an ace has a value of 11).
Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals).
Develop a forecast for year 6, using two-year moving average and trend analysis. Identify which method is most appropriate for this data set
A random sample of 1001 University of California faculty members taken in December 1995 was asked, "Do you favor or oppose using race, religion, sex, color, ethnicity or national origin as a criterion for admission to the University of California?
Which is the probability that the median of the sample is between $17 and $20?
The mean construction time for a standard two-car garage by Arrowhead Construction Company is 3.5 days. The time for the construction process follows the normal distribution.
Let A be the event that a student is enrolled in an accounting course, and let S be the event that a student is enrolled in a statistics course.
What is the probability that they all hit the target?
At the .05 level of significance, is there evidence of a difference in variability in the shipping time between the two outlets? What decision should the carpet manufacturer make? Please provide step by step solution.
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