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Refer to the list below to answer the questions.
X 0 -1 1 1 2
y 2 -2 5 4 6
1. Find an equation of the least squares regression line. Please show your work.
2. Is there a linear correlation between "x" and "y" at the 0.01 significance level? Please justify your answer.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop. Check the normality assumption.
A box in a certain supply room contains four 40 w light bulbs, five 60-W bulbs, and six 75-W bulbs. If two are randomly selected from the box and at least one of them is found to be rated 75-W.what is the probability that both of them are 40- W bu..
Use PHStat to make a box-whisker plot. If PHSTAT has yet to be installed, calculate Xmin, Xmax, Q 1 , Q 3 and median using equation in Class Notes-Quartiles, Percentile & Dectiles.
Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
The Weschsler IQ test has a μ =100 and a σ = 15. A vitamin company said if people took vitamin X for 30 days their IQ would improve. A simple random sample of 49 people took the vitamins for 30 days. They then took the IQ test. The mean IQ of the ..
Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u, = 30 with a = 5, and Sarah had a score of X - 45. On the Spanish exam, the mean was u, = 60 with 0 = 6 and Sarah had a score of X = 65. For which class must Sarah ..
Of the 500 students who responded to a survey about recycling on campus, 350 said they recycle on a regular basis. The sample proportion is ??
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
A human society claims that less than 36% of US. households own a dog. In random sample of 397 U. S. households, 151 say they own a dog. At mean=0.03, is there enough evidence to support the society's claim?
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
A sample of 148 of our statistics students rated their level of admiration for Hilary Rodham Clinton on a scale of 1 to 7. The mean rating was 4.06 and the standard deviation was 1.70.
Determine x-bar and s for this data set. You may suppose the values for bulb life are normally distributed. Use traditional method to make your decision.
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