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In 2006 75.9% of first year college students responding to a national survey said that they used internet frequently for research or homework. Administrators at a large state university believe that their current first year students use the internet more frequently than students in 2006. They find that 168 of an SRS of 200 of the universitys first year students said that they used the internet frequesntly for research or homework. Is the proportion of first year students at the university who said that they used the internet frequently for research or homework larger than the 2006 national value of 75.9% ?
a. Explain in words what parameter p is in this setting.
b. What are the null and alternative hypothesis H0 and HA ?
c. What is the numerical value of the sample proportion p^ ? The P-value is the probability of what event?
d. The P-value is P=0.0037. Explain carefully why this is reasonably good evidence that H0 is not true and that HA is true.
Suppose that 10% of all adults jog. An opinion poll asks an SRS of 400 adults if they jog. a) What is the sampling distribution of the proportion p^ in the sample who jog?
Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
Ethics The one-time fling! Have you ever purchased an article of clothing (dress, sports jacket, etc.), worn the item once to a party, and then returned the purchase?
What is the probability that the device will detect at least one of the two shoppers entering together?
Process data by Excel using its two-way ANOVA without replication program.
Explain your answer to someone who is familiar with the T test for a single sample, but not with the T test independent means.
Intersection of two mutually exclusive events: can be any value between 0 to 1, must always be equal to 1.
In regards to the statistics paper you helped me with. Can you do a conclusion of the findings. I can edit it to my communication style, but I do need to do the following:
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
On which test did he do better compared to the rest of the class?
Determine and record how much of the math grade can be explained by the PE grade? How much of the Writing grade can be explained by the Reading grade?
Die with 4 sides {1, 2, 3, 4} is tossed 2 times. Let X equal maximum of two observations and let Y equal minimum. Determine joint pmf of X and Y, and correlation coefficient. Are X and Y independent?
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