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Dole Pineapple Inc. is concerned that the 16 ounce can of sliced pineapple is being overfilled. The quality control department took a random sample of 50 cans and found that the arithmetic mean was
The body mass index (BMI) of an individual is one measure that is used to judge whether an individual is overweight or not. A BMI between 20 and 25 indicates that one is at a normal weight. In a sur
Beta Industries has net income of $1,700,000, and it has 1,830,000 shares of common stock outstanding. The company's stock currently trades at $61 a share.
Calculate by hands. Report the Chi-square statistic, degrees of freedom, critical value, and your decision. Conduct the data analysis via SPSS. Write the results using APA style. (I just need to know
Using a binomial table, find the binomial probabilities p(x) associated with given n, ratio, and x. a. n=6, ratio = 0.10, p(4) b. n=10, ratio =0.7, p(7) c. n=20, ratio = 0.4, p(3) d. n=8, ratio =0.9
According to most estimates, 10% of the people in the general population are left-handed and 90% are right-handed. A neurological theory of handedness and cerebral dominance predicts that there shou
Studies find that in a random sample of 3000 adults aged 18 and over, 1410 owned an MP3 player. The 95% large-sample confidence interval for the proportion of all adults aged 18 and over who own an
Please write down the simple linear regression model relating games won to yards gained rushing by opponents. Please interpret the intercept and the slope.
Plot the great-circle route from Washington, D.C. (39 degree N, 77 degree W) to Moscow (56 degree N, 38 degree E). What is the distance between the two cities?
Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution with ? = 1, (which is identical to a standard gamma distribution with ?
The Rockwell hardness of a metal is determined by impressing a hardened point into the surface of the metal and then measuring the depth of penetration of the point. Suppose the Rockwell hardness of
Suppose IQ scores were obtained from randomly selected couples. For 20 such pairs of people, the linear correlation coefficient is 0.896 and the equation of the regression line is y^=6.22 + 0.95x, w
The blood pressure measurements of a single patient were taken by twelve different medical student and the results are listed below. Construct a scatterplot, find a linear correlation coefficient r,
If alpha=0.05 and p= 0.07 ,would we reject or fail to reject null hypothesis? Please explain.
The rank correlation coefficient is used when one is
In a study of pregnant women and their ability to correctly predict the sex of their baby, 58 of the pregnant women had 12 years of education or less, and 37.9% of them correctly predicted the sex o
We have an urn with three green balls and two yellow balls. We pick a sample of two without replacement and put these two balls in a second urn. Next we sample two balls from the second urn with rep
For the chi-square test for goodness of fit, what is the value of df for a test with four categories and a sample of n=100?
A researcher reports that there is no consistent relationship between grade point average and the number of hours spent studying for college students. The correlation between grade point average and
The value of the Pearson r indicates: The value of the Pearson r indicates:
Which of the following correlations expresses the strongest relationship?
If the correlation between musical aptitude and art aptitude was found to be .75, which one of the following statements would be justified?
A researcher reported a correlation of 1.25 between an IQ test and grades in EPY 6214. Which one of the following interpretations is most reasonable?
We break a stick at a uniformly chosen random location. Find the probability that the shorter piece is less than 1=5th of the original.