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
MaRussiya [10]
2 years ago
8

My picture is my question ​

Mathematics
1 answer:
zvonat [6]2 years ago
7 0

Answer:

A

Step-by-step explanation:

You might be interested in
The lengths of pregnancies are normally distributed with a mean of 269269 days and a standard deviation of 1515 days. a. Find th
kati45 [8]

Answer:

a. 0.38%

b. 266.75 days

Step-by-step explanation:

We have the following data, mean (m) 269 and standard deviation (sd) 15, therefore:

a. The first thing is to calculate the number z:

z (x) = (x - m) / sd

z (309) = (309-269) / 15 = 2.67

When looking in the normal distribution table (attached), we have that at this value of z, the probability is:

P (z> 2.67), that is to say we must look in the table -2.67 and this value corresponds to 0.0038, that is to say 0.38%

b. Find the z-value with a left tail of 44%, i.e. 0.44. We look in the table for this value and what value of z corresponds.

invNorm (0.44) = -0.15

Find the corresponding number of days:

x = z * sd + m

we replace

d = -0.15 * 15 + 269 = 266.75 days

7 0
3 years ago
An equation that sets two fractions equal to each other is called a ____.
Shkiper50 [21]
An equation that sets two fractions equal to each other is called a proportion. A proportion is a name we give to a statement that two ratios are equal. When two ratios are equal, then the cross products<span> of the ratios are equal. Hope this helps.</span>
3 0
3 years ago
Read 2 more answers
PLEASE HELP!! SOON AS POSSIBLE.
Klio2033 [76]
2/15

90 ÷ 6 = 15

Theoretical probability would be 15 due to the equation above
7 0
3 years ago
some people advised that in very cold weather you should keep the gas tank in car more than half full move car had 6.5 gallons i
tangare [24]

Answer:

Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Irene's car had 6.1 gallons in ... in your car more than half full. Irene's car had 6.1 gallons in the 15 gallon tank on the coldest day of the year. Irene filled the tank with gas that costs $3.80 per gallon.

8 0
2 years ago
Read 2 more answers
3/8 as a decimal is ??
KatRina [158]

Answer:

0.375

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the relationship between the values of the given digits. 4s in 44,000
    9·2 answers
  • In point estimation a. data from the population is used to estimate the population parameter b. data from the sample is used to
    8·1 answer
  • 30 is what percent of 200?​
    8·1 answer
  • Change 33/12 to a mixed number
    14·2 answers
  • 1)Which of these systems of linear equations has an infinite number of solutions?
    6·1 answer
  • If h(x) = 2x^2 , then h(-2) + 5=_________
    6·1 answer
  • Which expression shows how to convert 60 hours to days?
    14·2 answers
  • 2. Write ten dollars and sixteen cents using the dollar symbol (without spaces)
    14·2 answers
  • Subtract 2 from the sum of j and 5
    14·1 answer
  • PLEASE HELP DUE NOW!!!<br> WILL MARK BRAINLIEST!!!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!