Mathematics, 07.12.2021 21:50 mewings
From a sample of 45 students exam scores, it was found that there was a mean score was 75 and a standard deviation of 5. Assume the distribution of exam scores is normal. construct and interpret a 95% confidence interval for the true mean score.
Answers: 2
Mathematics, 21.06.2019 18:30
Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.
Answers: 2
Mathematics, 21.06.2019 18:50
Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling
Answers: 1
Mathematics, 21.06.2019 19:30
If y varies directly as x2 and y=6 when x=6, find the constant of variation.
Answers: 2
From a sample of 45 students exam scores, it was found that there was a mean score was 75 and a stan...
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