Mathematics, 28.11.2019 06:31 lizzyhearts
(1 point) the effectiveness of a new bug repellent is tested on 18 subjects for a 10 hour period. based on the number and location of the bug bites, the percentage of exposed surface area protected from bites was calculated for each of the subjects. assume the population is normally distributed. the results were as follows: x¯¯¯=92 %, s=8% the new repellent is considered effective if it provides a percent repellency of more than 89%. using α=0.025, construct a hypothesis test with null hypothesis μ≤0.89 and alternative hypothesis μ> 0.89 to determine whether the mean repellency of the new bug repellent is greater than 89% by computing the following: (a)the degree of freedom is df= .
Answers: 3
Mathematics, 21.06.2019 15:30
Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
Answers: 3
Mathematics, 21.06.2019 17:00
Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π
Answers: 1
Mathematics, 21.06.2019 18:00
Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.
Answers: 2
Mathematics, 21.06.2019 21:10
See attachment below and find the equivalent of tan(∠qsr)
Answers: 3
(1 point) the effectiveness of a new bug repellent is tested on 18 subjects for a 10 hour period. ba...
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