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
LuckyWell [14K]
3 years ago
8

For a confidence level of 85%, find the critical value for a normally distributed variable. The sample mean is normally distribu

ted if the population standard deviation is known.
Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Answer:

The  value is  Z_{\alpha } =  1.439

Step-by-step explanation:

From the question we are told that

   The  confidence level is  C  =  85%  

Generally the level of significance is mathematically represented as

         \alpha =  (100 -  85 )\%

        \alpha =  0.15

Now from the normal distribution table  the critical value  of \alpha is  

     Z_{\alpha } =  1.439

You might be interested in
Number of gallons of gas. Miles driven 0 0 2 62 4 124 10 310 How many gallons are used when the car has been driven 18 miles
Goryan [66]

558 gallons are used when the car has been driven 18 miles.

<u>Step-by-step explanation:</u>

<u>From the given data, it can be determined that :</u>

  • The number of gallons for 2 miles = 62 gallons
  • The number of gallons for 4 miles = 124 gallons
  • The number of gallons for 10 miles = 310 gallons

Let, the number of gallons for 18 miles = 'x' gallons

<u>To find x :</u>

compare the given data with the unknown data,

62 gallons / 2 miles = x gallons / 18 miles

keep x alone on one side,

x = (62×18) / 2

x = 31×18

x = 558 gallons

Therefore, 558 gallons are used to drive 18 miles.

3 0
3 years ago
Riley's mom has asked him to go to the
Ierofanga [76]

Answer:

4 dollars

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The tallest escalator on the London Underground system is at Angel Station. It rises to a height of 90 feet over a horizontal di
Amanda [17]
0.222 is your answer 
5 0
3 years ago
what is the equation in point-slope form of the line that passes through the point (4, "-7)" and has a slope of "-1/4"
Leona [35]

Answer:

y+7=-1/4(x-4) i think

Step-by-step explanation:

6 0
3 years ago
The most common women’s shoe size in the U.S. is reported to be an 8 1/2 . A shoe store uses a table like the one below to decid
vesna_86 [32]

Answer:

the answer is caca

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following would be an acceptable first step in simplifying the expression sin x/ 1-cos x
    9·2 answers
  • Plz help needed for graduation!!
    6·1 answer
  • 10 and 11 pleaseeee extra points will be added
    14·2 answers
  • Melanie bought 3 adult tickets and 1 children ticket for $38. John bought 3 adult tickets and 2 children tickets for $52. What i
    11·1 answer
  • (11/2x + 3) -2(-11/4x -5/2)
    5·2 answers
  • What is the missing angle measure of 112 68 50
    9·2 answers
  • Arrange the numbers from largest to smallest 2.6 to 2.061 2.61 20.66 6.21​
    5·2 answers
  • Help me. Two numbers have a sum of 30. Half of their difference is 7. Find the numbers.
    14·1 answer
  • . Graham bought 45 bags of potatoes. Each bag weighed exactly 4pounds.How many pounds of potatoes did he buy?
    11·1 answer
  • Please help !! Confused
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!