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
marta [7]
3 years ago
13

For the wheat-yield distribution of Exercise 4.3.5, find

Mathematics
1 answer:
Setler79 [48]3 years ago
6 0

Answer:

a) 90.695 lb

b) 85.305 lb

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 88, \sigma = 7

(a) The 65th percentile

X when Z has a pvalue of 0.65. So X when Z = 0.385.

Z = \frac{X - \mu}{\sigma}

0.385 = \frac{X - 88}{7}

X - 88 = 7*0.385

X = 90.695

(b) The 35th percentile

X when Z has a pvalue of 0.35. So X when Z = -0.385.

Z = \frac{X - \mu}{\sigma}

-0.385 = \frac{X - 88}{7}

X - 88 = 7*(-0.385)

X = 85.305

You might be interested in
Find the x and y intercept of 8x+10y=15. NO LINK TO ANSWER PLEASE TYPE
oee [108]

Answer:

x intercept: 15/8 and yintercerpt is 3/2

Step-by-step explanation:

to find y intercept you have to put equation in standard form.

10y=-8x+15

y=--4/5x+3/2

x intercept is when y=0, so we plug in 0

0=-4/5x+3/2

4/5x=3/2

x=15/8

7 0
2 years ago
For each hour he babysits, Anderson earns $1 more than half of Carey’s hourly rate. Anderson earns $6 per hour. Which equation c
ozzi
Carey earns c hourly
Anderson earns $6 hourly which is also 1+ c/2
So, 6=1+c/2
      12=2+c
c=$10
Carey earns $10 hourly
3 0
3 years ago
Read 2 more answers
Solve the equation<br> 5.4/12 = z/8
saul85 [17]

Answer:

18/5

Step-by-step explanation:

5.4/12 = 1/8 is equivalent to (5.4)(1/12) = (z/8), or

                                              (54/10)(1/12) = z/8.

The LCD is (10)(8)(12), or 120.

Mult. both sides by 120 yields 54 = 15z.

Dividing both sides by 15, we get z = 54/15 = 18/5 = z

6 0
3 years ago
What is the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1331%7D" id="TexFormula1" title="\sqrt[3]{1331}" alt="\s
Umnica [9.8K]

Answer:im not sure i wish i can help but goodluck

Step-by-step explanation:

7 0
3 years ago
What adds to negative 4 and multiplys to negative 16
TEA [102]
12 bdbdjfjcifnfskkHxhxudhdhxjjzjzkzjxhfhd idk
4 0
3 years ago
Other questions:
  • Please need help asap!!!!
    9·2 answers
  • Cable hangs between two poles of equal height and 37 feet apart. at a point on the ground directly under the cable and x feet fr
    13·1 answer
  • Find the value of kk for which the constant function x(t)=kx(t)=k is a solution of the differential equation 5t3dxdt+2x−2=05t3dx
    11·1 answer
  • What is the sum of 1,605 + 1,219 + 1,119 + 1,153?
    11·2 answers
  • PLEASE HELP ME!!!!! INEED HELP ON THIS!!!
    7·1 answer
  • Suzanne is putting a fence around her rectangular garden. The length of the garden, x, is 4 feet more than the width. The perime
    9·1 answer
  • Which expression is equivalent to ? A. B. C. D.
    14·2 answers
  • Determine whether 270.5m . 30.5m is equivalent to each of the following expressions
    5·1 answer
  • Write 12x + 4y= –36 in slope-intercept form. y= x− .
    5·2 answers
  • A $35,000 ordinary whole-life insurance policy purchased by abe snyder on may 12, 1975 (abe was born may 11, 1927). find the ann
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!