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
astraxan [27]
3 years ago
5

NEED HELP

Mathematics
1 answer:
Margaret [11]3 years ago
4 0
Sorry I'm gonna take a guess.......... d?
You might be interested in
10+10 is the same as 11+11<br> do you understand?
Inga [223]

Answer:

wow

Step-by-step explanation:

lol idle b Betsey e wet get hectic

3 0
3 years ago
Read 2 more answers
A( 3tx – 2b) = c(dx - 2)​
olganol [36]

Answer:

A3tx-A2b=cdx-2c

Step-by-step explanation:

Distribution

8 0
3 years ago
The time taken to assemble a laptop computer in a certain plant is a random variable having a normal distribution of 20 hours an
ludmilkaskok [199]

Answer:

a) 40.13% probability that a laptop computer can be assembled at this plant in a period of time of less than 19.5 hours.

b) 34.13% probability that a laptop computer can be assembled at this plant in a period of time between 20 hours and 22 hours.

Step-by-step explanation:

When the distribution is normal, we use 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 question:

\mu = 20, \sigma = 2

a)Less than 19.5 hours?

This is the pvalue of Z when X = 19.5. So

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

Z = \frac{19.5 - 20}{2}

Z = -0.25

Z = -0.25 has a pvalue of 0.4013.

40.13% probability that a laptop computer can be assembled at this plant in a period of time of less than 19.5 hours.

b)Between 20 hours and 22 hours?

This is the pvalue of Z when X = 22 subtracted by the pvalue of Z when X = 20. So

X = 22

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

Z = \frac{22 - 20}{2}

Z = 1

Z = 1 has a pvalue of 0.8413

X = 20

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

Z = \frac{20 - 20}{2}

Z = 0

Z = 0 has a pvalue of 0.5

0.8413 - 0.5 = 0.3413

34.13% probability that a laptop computer can be assembled at this plant in a period of time between 20 hours and 22 hours.

4 0
3 years ago
A survey of teachers in a school found that 7% of Teachers use mobile applications for study activities what decimal number repr
pantera1 [17]

Answer:

.07

Step-by-step explanation:

5 0
3 years ago
You are going to a fair! It costs $6 for the
inna [77]

Answer:

5

Step-by-step explanation:

21-6=15/3=5

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me with number 10? Thank you.
    9·1 answer
  • What is a positive times a negative
    5·2 answers
  • Find the slope of the line that passes through the points (5, 8) and (9, 4).
    13·1 answer
  • SHOW STEP BY STEP FOR BRAINLIEST
    15·1 answer
  • PLEASE HELP <br> Find the diameter of the object.
    6·2 answers
  • There are 45 students in a class. If 60% of them are girls, find the number of girls and boys
    5·2 answers
  • 12.<br> ΥΥΥΥΥ<br> help please
    15·2 answers
  • 1. A square pizza box has an area of 155 cm^2. Which is the best estimate of the side length of the pizza box?
    15·2 answers
  • A set of 6 number cards contain the numbers 2, 5, 7, 8, 9, and 11. Which ratio is less than the ratio of odd number cards to tot
    12·1 answer
  • The points H, I, J and K all lie on the same line segment, in that order, such that the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!