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A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
Interpret your findings.
The sampling distribution of the average score and Suppose x' is your average pay for the 100 weeks. Then x' has approximately
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
Probability using discrete distribution.The probability distribution for the random variable x follows.
What is Peter's median grade point at graduation? What is the shape of the grade point distribution?
The times needed to fall asleep are assumed to follow a normal distribution. The results for the two nights for the ten volunteers are shown below:
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
Develop a scatter diagram for the data and write a brief summary.
Can we conclude that car size is dependent on marital status? YES or NO (circle one)
Basic Statistics problem
he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
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