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A sample of 10 high school students completed a course designed to increase SAT scores. Test scores (sum of X) = 5846 (sum of X squared) = 3428148
A) Mean and standard deviation are 584.6 and 34.28
B) What scores mark the cutoff for the most deviant 10%
C) In the past the average score was 542 can we conclude that there was a significant difference in the new test. We have to write a statistical statement and an English one.
D) If a student scored a 500 what would his percentile rank be?
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H 0 = 1/2.
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
Compute the variance and standard deviation
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
If we fit the least-squares line to the 12 data points (one for each month) we obtain the following results from a software package. Notice that temperature is taken as the explanatory variable and crawling age as the response.
Conduct an analysis of variance
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
Find the probability of winning jackpot?
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