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
maks197457 [2]
3 years ago
6

(Statistics) Can someone help explain how to do this

Mathematics
1 answer:
Allisa [31]3 years ago
4 0

Answer:

STUDY HARDER!

Step-by-step explanation:

You might be interested in
Use the cumulative normal distribution table to find the z-scores thqt bound the middle of 68% of theje area under the stanrard
padilas [110]

Answer:

Z scores between -0.995 and 0.995 bound the middle 68% of the area under the stanrard normal curve

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Middle 68%

Between the 50 - (68/2) = 16th percentile and the 50 + (68/2) = 84th percentile.

16th percentile:

X when Z has a pvalue of 0.16. So X when Z = -0.995

84th percentile:

X when Z has a pvalue of 0.84. So X when Z = 0.995.

Z scores between -0.995 and 0.995 bound the middle 68% of the area under the stanrard normal curve

7 0
3 years ago
Kat is painting the edge of a triangular stage prop with reflective orange paint. The lengths of the edges of the triangle are (
vfiekz [6]
We are given with three lengths of a triangle expressed in terms and variables: (3x – 4) feet, (x^2 – 1) feet,  and (2x^2 – 15) feet. The perimeter of the triangle is equal to the sum of the three sides of the triangle. In this case, the sum is 3x^2 + 3x -20. When x is equal to 4, we substitute  <span>3*16 + 3*4 -20 equal to 40 feet.</span>
4 0
3 years ago
Find the highest common factor of 28 and 210 <br><br> Step by step <br><br> Please help
Yuri [45]

Hello there!

To find the GCF, we must list all the factors and then just spot the greatest factor.

28: 1, 2, 4, 7, 14, 28.

210 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70.

So 14 is the GCF. Hope this helps you!

~Just a felicitous girlie

#HaveAnAwesomeDay

SilentNature

7 0
2 years ago
A culture of 100,000 bacteria triples every hour. How many bacteria were there 3 hours ago? (easy steps please)​
Crank

Answer:

If it multiplies by 3 each hour, you would divide by three if you are looking for the first term. It is Geometric Sequence.

Step-by-step explanation:

100,000/3=33333.3333333 (1/3)

5 0
3 years ago
A carpenter wants to expand a square room. The new room will have one side 4 feet longer and the adjacent side 6 feet longer tha
gogolik [260]

Answer:

  Dimensions of original room = 12 x 12 feet.

Explanation:

 Let the size of old square room be a x a.

 New dimension = ( a+4 ) x ( a + 6 )

   We have area of the new room will be 144 square feet greater than the area of the original room.

  So,     ( a+4 ) x ( a + 6 ) = a x a + 144

              a²+10a+24= a²+144

              10a = 120

                  a = 12 feet.

 Dimensions of original room = 12 x 12 feet.

 

8 0
3 years ago
Other questions:
  • Convert 95 pints to gallons. Round to one decimal place.
    6·1 answer
  • A bag contains purple marbles and red marbles, 36 in total. The number of purple marbles is 9 less than 2 times the number of re
    11·1 answer
  • For what value or values of b is it true that |b| = -b
    15·2 answers
  • Whats the mean absolute deviation of 1, 3, 2, 2, 1, 3, 3, 1
    12·1 answer
  • A chocolate chip cookie recipe calls for 6 cups of chopped nuts and 8 cups of chocolate chips. When Gregory made a batch of thes
    6·1 answer
  • Jessica's meal cost $19.64 and Derrick's meal cost $32.40. Derrick pays for both meals, and leave a 15% tip. What is the total c
    14·2 answers
  • Graph each line. Give the slope-intercept form for all standard form equations.
    7·1 answer
  • Name at least two independent variables that could result in a change in the price of a basket of apples.​
    12·1 answer
  • Which set of coordinates represents a function​
    15·1 answer
  • 12. MP Persevere with Problems Write the function rule for each function.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!