1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ksju [112]
3 years ago
8

A researcher has a colony of bongo spiders in his lab. There are 1200 adult spiders in the colony, and their weights are normall

y distributed with a mean of 11 grams and a standard deviation of 2 grams.
a) about what percent of spiders in the colony weigh between 7 grams and 13 grams?
b) about what percent of spiders in the colony weigh less than 9 grams?
c) What is the z-score of a spider in this colony that weighs 15 grams?
d) Approximately 68% of all the spider weights would occur between what two weights.
Approximately 68% of all the spider weights would occur between ______and _______grams.
e) What percent of spiders in the colony weigh more than 15 grams?
REAL ANSWERS ONLY!
Mathematics
1 answer:
iogann1982 [59]3 years ago
8 0
300 and 12
Have a amazing day!
You might be interested in
Round to the underlined place value<br> 923,718
max2010maxim [7]
What number is underlined
7 0
3 years ago
Read 2 more answers
What is the difference (how far apart on a number line are the solutions) between the sum of roots versus the product of the roo
pychu [463]

Answer:

7

Step-by-step explanation:

(x - 5)(x + 2) = 0

x = 5 & -2

Now,

given

r > s

r = 5, s = -2

Now,

=> r - s

=> 5 - (-2)

=> 5 + 2

=> 7

4 0
2 years ago
Read 2 more answers
How many solutions does the equation have 3 + 5n = 5(n + 2) - 7
krok68 [10]

Answer: an infinite amount of answers

Step-by-step explanation:

It’s all real numbers from negative infinity to positive infinity

3 0
3 years ago
I need help with this question
MrMuchimi
Part a:
this is really just intuition. you can go either way as long as you back up what you say.
either you think hunter would be faster because he starts out with a lot more money, or you think amado would be faster because he earns a lot more.

part b:
let x be the number of hours hunter works, and y the number that amado works.
they both need to earn 600 dollars.

hunter's money is modelled by 150 + 7.5x
to get 600 dollars
150 + 7.5x = 600
7.5x = 450
x = 60

amado's money is modelled by 12y
to get 600 dollars
12y = 600
y = 50

hunter would need to work 60 hours to make enough money, but amado would only need to work 50, so hunter will take longer.

then say whether this agrees with what you guessed in part a
6 0
3 years ago
The m6 = (11x + 8)° and m7 = (12x – 4)° What is the measure of 4? m4 = 40° m4 = 48° m4 = 132° m4 = 140°
bezimeni [28]
M< 6 = m< 7 (vertical angles)
11x + 8 = <span>12x – 4
12x - 11x = 8 + 4
 x = 12
so
m< 6 = </span>11x + 8 
m< 6 = 11(12) + 8
m< 6 = 132 + 8
m< 6 = 140

m<4 = 180 - m<6
m<4 = 180 - 140
m<4 = 40

answer

<span>m<4 = 40</span>
7 0
4 years ago
Read 2 more answers
Other questions:
  • WILL MARK BRAINLIEST! janice makes a box in the shape of a rectangular prism. A net of the box is shown. Explain how you got you
    15·1 answer
  • Which table represents a function
    5·1 answer
  • As a wave passes by, the height of the water is modeled by h(t)=−9cos(5π/9t), where h(t) is the height in feet above mean sea le
    13·1 answer
  • What is the correct method of recording numerical information from an experiment?
    7·2 answers
  • The y-intercept of 2x-y=6 is -6
    9·2 answers
  • 4 Write the decimal expansion for Choose the correct answer below. OA0.36 B. 0.3611 Oc. 0.63 OD. 0.6363.​
    6·1 answer
  • If 9*8*7*6*5*4*3*2*1= 3^a*y, where y is not divisible by 3, compute for the value of a
    6·1 answer
  • What is the length of the hypotenuse of the right triangle? Enter your answer in the box.
    15·2 answers
  • Olivia thinks of a number she multiplies her number by 6 and gets an answear of -54 what was her original number
    8·2 answers
  • Subtract: 3/4y-(1/2y+1/3)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!