Mathematics, 12.11.2019 23:31 randyg0531
The club professional at a difficult public course boasts that his course is so tough that the average golfer loses a dozen or more golf balls during a round of golf. a dubious golfer sets out to show that the pro is fibbing. he asks a random sample of 15 golfers who just completed their rounds to report the number of golf balls each lost. assuming that the number of golf balls lost is normally distributed with a standard deviation of 3. write down the null and the alternative hypothesis. using p-value approach only, can we infer at the 10% significance level that the average number of golf balls lost is less than 12? from the evidence, do you reject the null hypothesis? (hint: the sample mean is 11.)
1 14 8 15 17 10 4
12 6 14 21 15 9 11 8
Answers: 2
Mathematics, 21.06.2019 18:40
Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form: science fiction books to history books 2. write the ratios as fractions: dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
Answers: 1
Mathematics, 21.06.2019 18:50
What are the values of a, b, and c in the quadratic equation 0 = x2 – 3x - 2? a = 1, b = 3, c = 2 a=, b = -3,c=-2 a = 1, b = 3, c= 2 a = 1.0= -3, c = 2
Answers: 2
Mathematics, 21.06.2019 22:10
Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt
Answers: 1
The club professional at a difficult public course boasts that his course is so tough that the avera...
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