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
Nezavi [6.7K]
3 years ago
11

Rachel measures the lengths of a random sample of 100 screws. The mean length was 2.6 inches, with a standard deviation of 1.0 i

nches. Using the alternative hypothesis (µ < µ0), Rachel found that a z-test statistic was equal to -1.25. What is the p-value of the test statistic? Answer choices are rounded to the thousandths place.
Mathematics
1 answer:
olga_2 [115]3 years ago
4 0

Answer:

Step-by-step explanation:

Using the alternative hypothesis (µ < µ0),

To find the p-value with test statistic -1.25 and assuming a standard level of significance of 0.05, using a p value calculator, the p-value is 0.1057 which is great that 0.05. Thus, the results is not significant.

Using the p value calculation.

1. Check the left tailed z table as the test statistic is negative,

2. Then find the probabilitythat z is greater than your test statistic (look up your test statistic on the z-table- the value under 1.2 and 0.05 which is 0.8944

3. Then, find its corresponding probability, and subtract it from 1 to get your p-value- 1-0.8944 = 0.1056.

You might be interested in
Font
balu736 [363]

Answer:

A. 4.2 times

Step-by-step explanation:

Chlorine level of the pool as adjusted by Paula = 6.3 parts per million

Ideal Chlorine level as suggested by the magazine = 1.5 parts per million.

Thus, the number of times the ideal level of Chlorine that the current level is = current level ÷ ideal level

= \frac{6.3}{1.5} = 4.2

The current Chlorine level is 4.2 times the ideal Chlorine level.

7 0
3 years ago
If 100 books cost 20 dollars, how many books can cost 5 dollars?
BaLLatris [955]

Answer: 25 books. you can buy 25 books with 5 dollars

Step-by-step explanation:

8 0
3 years ago
The function g is defined as follows.
Radda [10]

Answer:

h(x) =  2x²+2

Step-by-step explanation:

Given the function g is defined as follows.

g(x) = 2x²+7

If the graph is translated by 5units vertically downwards, this means that the function will be reduced by 5 units to have;

h(x) =  2x²+7 - 5

h(x) =  2x²+2

3 0
2 years ago
An orbiting satellite has seven solar cells, which function independently of each other. During a mission, each cell fails with
Makovka662 [10]
The due date is 2pm, dolololo
4 0
3 years ago
4m^2-5m when m= -4 solve
yawa3891 [41]

Answer:

84

Step-by-step explanation:

4 (-4)^2 - 5(-4)

4 × 16 - 5 × -4

64 + 20

84

8 0
1 year ago
Other questions:
  • The measure of one side of a square is (s + 3) inches long.Writes two different equivalent expressions that represent the perime
    5·1 answer
  • Is 22π a whole number
    5·1 answer
  • Is 40,10,5/2,5/8 geometric or arithmetic
    6·2 answers
  • What inequality represents the verbal expression? all real numbers less than 69
    13·1 answer
  • Rewrite the linear expression by factoring out the coefficient of the variable. -1/2x +6
    10·2 answers
  • 3 1/4 - 2 1/3 what is the answer please explain
    11·1 answer
  • Original price is $50, discount is 15%, what is the sale price?
    13·2 answers
  • You want to be able to withdraw the specified amount periodically from a payout annuity with the given terms. Find how much the
    6·2 answers
  • How many solutions does the system have? y=−2x−4 y=3x+3 ​
    11·2 answers
  • Reflect the given triangle over<br> the line y=-x.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!