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Crickets make their chirping sounds by rapidly sliding one wing over the other. The faster they move their wings, the higher the number of chirping sounds that are produced. Scien- tists have noticed that crickets move their wings faster in warm temperatures than in cold temperatures (they also do this when they are threatened). Therefore, by listening to the pitch of the chirp of crickets, it is possible to tell the temperature of the air. The following table gives the number of cricket chirps per 13 seconds recorded at 10 different temperatures. Assume that the crickets are not threatened.
Temperature
60
66
70
73
78
80
82
87
90
92
Number of chirps
20
25
31
33
36
39
42
48
49
52
Calculate the least-squares regression line for these data and discuss its usefulness.
numerous studies have demonstrated that listening to music while studying can improve memory hallam price amp katsarou
a screw jack carries a 5 kn load. it has an m50 times 4 mm thread with a mean diameter of 47.4 mm. calculate the screw
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a tire that lasts more than 80,000 miles?
according to nielsen media research the average number of hours of tv viewing per household per week in the united
Cconducting in which you would analyze your results using a factorial ANOVA. Use the appropriate notation to describe the ANOVA you would conduct. Write your response in a Microsoft Word documen.
Suppose that a random sample of 51 passengers showed an average total weight of 200 pounds with a sample standard deviation of 59.5 pounds. What is the value of the test statistic?
A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue?
A laboratory scale is known to have a standard deviation of = 0.001 gram in repeated weighings. Scale readings in repeated weighings are normally distributed, with mean equal to the true weight of the specimen.
Conduct an analysis of variance
Test to determine if there is a significant negative relationship between the independent and dependent variable at a = .05 and .01
the annual ground coffee expenditures for households are approximately normally distributed with a mean of 42.75 and a
it is thought that prehistoric indians did not take their best tools pottery and household items when they visited
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