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
Len [333]
3 years ago
8

What z score in a normal distribution has 33% of all score above it? ap stats quiz 2.2a answers?

Mathematics
1 answer:
Sladkaya [172]3 years ago
8 0

What z score in a normal distribution has 33% of all score above it?

Answer: A z score which has 33% of all scores above it, will have 67% of all scores  below it.

To find the required z score, we need to find the z value corresponding to probability 0.67.

Using the standard normal table, we have:

z(0.67)=0.44

Therefore, the z score = 0.44 has 33% of all score above it.


You might be interested in
PLSSSSSSSSSSSSSSSSSSS HELPPPPPPPPPPPPPPPPPPP!!!!GUARaNTEE REWARDAmanda earned a score of 940 on a national achievement test that
MrMuchimi
To solve this question, you¨ll need to use a table of the standardized Normal distribution, or you could use a graphing calculator. The answer will be the cumulative property which will be a number with decimals. However, this represents the students who had a lower score then her, You´ll need to subtract this from 1 in order to get the opposite number, which will be the kids who scored higher. Be sure to multiply the result by 100 to get a percentage. Your answer should be 0.806 hope this helped!

8 0
3 years ago
A math teacher surveys 10 randomly selected students in her classes. She finds that 7 of the 10 speak more than one language flu
kykrilka [37]

Answer:

       

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45 specimens are buried in soil
Fiesta28 [93]

Answer:

The sample has not met the required specification.

Step-by-step explanation:

As the average of the sample suggests that the true average penetration of the sample could be greater than the 50 mils established, we formulate our hypothesis as follow

H_0: The true average penetration is 50 mils

H_a: The true average penetration is > 50 mils

Since we are trying to see if the true average is greater than 50, this is a right-tailed test.

If the <em>level of confidence</em> is α = 0.05 then the z_\alpha score against we are comparing with, is 1.64 (this is because the area under the normal curve N(0;1) to the right of 1.64 is 0.05)

The z-score associated with this test is

z=\frac{\bar x-\mu}{s/\sqrt{n}}

where

\bar x = <em>mean of the sample</em>

\mu = <em>average established by the specification</em>

s = <em>standard deviation of the sample</em>

n = <em>size of the sample</em>

Computing this value of z we get z = 3.42

Since z >z_\alpha we can conclude that the sample has not met the required specification.

5 0
4 years ago
Please help<br><br> (50 points)
DiKsa [7]

Answer:

RQS = 63

PQR = 126

Step-by-step explanation:

because QS is an angle bisector, PQS =SQR and PQR = 2*PQS.

3 0
3 years ago
Read 2 more answers
Help me<br> and i will give you brainlost
Ronch [10]

Answer:

I'm not sure.

Step-by-step explanation:

But I will choose c.

45 MINUTES to run6 mile

4 0
3 years ago
Other questions:
  • Please help me in this:
    5·1 answer
  • How many decimal places are in the product of the expression below?<br><br> 25.6 times 14.2
    5·2 answers
  • The chart shows the number of points Jerry scored on each test this week out of the number of points possible for the test.
    7·1 answer
  • After purchasing a cell phone online, Mary attempts to sell the phone for $325. If this was a markup of 24%, how much did Mary o
    11·2 answers
  • An experiment consists of 8 independent trials where the probability of success on each trial is 3 8 . Find the probability of o
    5·1 answer
  • Justin made $204 for 12 hours of work. At the same rate, how much would he make for 18 hours of work?
    7·2 answers
  • Solve for x.<br> X^2-20x+100=0
    10·2 answers
  • -x + 1 = x + 21<br><br>solve for x<br><br><br>I need this asap​
    13·2 answers
  • What the answer pls…
    10·1 answer
  • A lesson ends at 2:30 it lasts for 55 minutes. when does the lesson starts
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!