subject
Mathematics, 04.02.2021 22:50 ramjand7853

1. Entomologist Heinz Kaefer has a colony of bongo spiders in his lab. There are 1000 adult spiders in the colony, and their weights are normally distributed with mean 12 grams and standard deviation 2 grams. (a) If a spider weighs 15.6 grams, what is the standard score (z-score)?

(b) What is the standard score of a spider in this colony that weighs 10 grams?

(c) Look at your answers for a and b. When the value is greater than the mean, what is the sign of the standard score? What happens to the sign when the value becomes less than the mean?

(d) About what percent of spiders in the colony weigh between 10 grams and 14 grams?

(e) About how many spiders in the colony weigh more than 13 grams? Remember to calculate the number of spiders, not a %

(f) What percent of the spiders weigh less than 9 grams?
(g) What is the weight of a spider at the 90th percentile?
(h) What is the weight of at the 15th percentile?

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 22:00
The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.
Answers: 1
question
Mathematics, 22.06.2019 01:20
Which of the following shows the graph of y=2e^x?
Answers: 2
question
Mathematics, 22.06.2019 02:00
Hey everyone! this question is a challenge question. for 50 points if you wish. all you have to do is answer the correct it has to be correct, in under 50 seconds, and i will make you the ! you want to accept this challenge. i already know! i mean, it's 50 free points! here is the question: 11x2= answer this correct, you get two prizes. don't forget. you only have 50 seconds or it wont happen. get it correct in under 50 seconds! that's not bad. so stop reading this long thing and !
Answers: 2
question
Mathematics, 22.06.2019 03:10
If f(x) = 5ั… โ€“ 2 and g(x) = 2ั… + 1, find (f โ€“ g)(x).
Answers: 1
You know the right answer?
1. Entomologist Heinz Kaefer has a colony of bongo spiders in his lab. There are 1000 adult spiders...
Questions
question
History, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20