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In 2006, 75.9% of first-year college students responding to a national survey said they used the Internet for research or homework. Administrators at a college believed first-year students used the Internet more frequently than students in 2006. They find that 168 of an SRS of 200 first-year students said they used the Internet for research or homework. Is the proportion of first-year students who used the Internet frequently for research or homework larger than the 2006 national value of 75.9%? a) Explain in words what the parameter p is in this setting. b) What are the null and alternative hypotheses 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 the reasonably good evidence that H0 is not true and that Ha is true. Also, carry out the hypothesis test described above and compute the P-value. How does your value compare with the value given above?
In each of the attached cases show that the set U is linearly independent subset of the vector space V. Give, with justification, a basis of V which contains the set U.
If 80% of the connectors are kept dry and 205 are wet, what proportion of the connectors fail during the warrnty period?
A package delivery company has determined that they can meet their schedules if they have 4 drivers for every 30 square miles of area they cover. If they want to offer service to a county of 75 square miles, how many drivers must they have?
Records indicate that t hours past midnight, the temperature at the local airport was f(t) = -0.3t^2+4t+10 degrees Celsius. what was the average temperature at the airport between 9:00am and noon?
evaluate the exact value of the trigonometric functions.nbspuse common trigonometric identities for the functions given
a football falls from peak height of 23m to a final height of 1.3 m where it is caught. what is the final vertical velocity of the ball at the instant it is caught.
Sodas in a can are supposed to contain an average 12 oz. This particular brand has a standard deviation of 0.1 oz., with an average of 12.1 oz. If the contents in the population of all cans follow a normal distribution, what is the probability tha..
if there is 4 tagged elk and 7 total one month and 6 tagged 10 total another month with 12 tagged and 14 total the 3rd month what is the estamate size of the elk population each month.
What is the fewest number of pieces you can receive in a fair exchange for 2 flats, 14 longs, and 12 units? What is the fewest number of pieces you can receive in a fair exchange for 1 flat, 9 longs, and 24 units?
Consider the following linear mapping from C[-pi,pi] into itself: L(f)=integral from -pi to pi of G(x),h(y),f(y)dy for any function f(x) in C[-pi,pi].
a rectangle has a lenght that is 3 feet more than two time the width. the area of the rectangle is 152 ft^2 draw a daigram of the rectangle write an equation from the diaphram
.With the conditions of problem 1, if 20 students are selected , what is the probability that the mean of their scores is greater than 18?
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