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Problem: For a biology project, you measure the tail length in centimeters and weight in grams of 12 mice of the same variety. What units of measurement do each of the following have?
(a) The mean length of the tails
(b) The first quartile of the tail lengths
(c) The standard deviation of the tail lengths
(d) The variance of the weights
Use this as the population mean and the population standard deviation is $.20. What is the probability that the mean price for a sample of 30 service station will be within $.03.
With3 discrete variables(50 states, urban, and rural) and2 continuous variables(average time, 5 types of transportation). I need themean, median, mode, standard deviation.
The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. For premium grade, 14 out of 105 samples failed
BMI in children is roughtl normally distributed with the mean of 24.5 and standard deviation of 6.2. BMI of 30 or more is considered obese. Determine proportion of children are obese?
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
tossing for astragali was the most popular game of the chance in roman times. many throws of one present-day astragalus
Professor Jennings claims that 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part time or full time jobs. A random sample of 81 students shows..
1. The owner of a ?eet of taxi cabs wants to determine if there is a difference in the lifetime of two different brands of car batteries used in the ?eet of cabs. State the appropriate null and alternative hypotheses.
two points are selected at random independentlyand uniformly along a 1-meterlong stick and the stick is broken at the
Suppose that we plan to use a statistical test at the two-sided 5% level of significance and the study is designed to have 80% power to detect the alternative hypothesis that the two-year survival rates in the paclitaxel and docetaxel arms are 40%..
A diet is being developed which must contain at least 100 mg of vitamin C. Two fruits are used in this diet. Bananas contain 30 mg of vitamin C and Apples contain 20 mg of vitamin C. The diet must contain at least 100 mg of vitamin C. Which of the..
a distribution with a mean of micro 62 and a standard deviation of s 8 is transformed into a standardized distribution
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