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
elena-s [515]
2 years ago
10

In a law office, the average number of billed hours per day was 150 last year. In the first 85 days of this year, the average nu

mber of billed hours per day is 158 with a standard deviation of 65 hours. When testing the hypothesis (at the 10% level of signficance) that the average number of billed hours per day has increased, what is the null and alternative hypotheses (please write out the null and alternative hypotheses below AND on your scratch work...failure to do BOTH will result in 0 points)
Mathematics
1 answer:
BigorU [14]2 years ago
6 0

Answer:

There isn't enough evidence to reject H0

Step-by-step explanation:

Null hypothesis :

H0: μ = 150

H1 : μ > 150

Decision region :

Reject Null if ;

Pvalue < α

Zstatistic = (x - μ) / (s/sqrt(n))

Zstatistic = (158 - 150) / (65/sqrt(85))

Zstatistic = 0.1135

Using the P value calculator from Zstatistic at 90% ; α = 0.10 confidence interval ; one tailed test = 0.128

Pvalue = 0.128

Since ; 0.128 > 0.10

Pvalue > α

We cannot reject H0:

You might be interested in
Brainliest if you are correct
frez [133]

Answer:

D) log_2(x)+3log_2(9)

Step-by-step explanation:

Given: log_2(9x^{3})

Use Exponent Rule: 3log_2(9x)

Use Addition Rule: log_2(x)+3log_2(9)

4 0
2 years ago
Read 2 more answers
What is the principal which would amount to $6900 in 3 years at 5% simple interest per annum?​
balu736 [363]

Answer:

$6000

Step-by-step explanation:

accumulated amount = A = PI

A = $6900

Let P = x

6900 - I = x

I = (x)(0.05)(3yrs) = 0.15x

6900 - 0.15x = x

Add

6900 = 1.15x

Divide, solve for x

x = 6000

8 0
2 years ago
Which of the following represents the factorization of the binomial below ? X2-121
nataly862011 [7]

Answer:

(x+11)(x-11)

Step-by-step explanation:

A ^2 - B ^2 =(A+B) (A-B).. (*)

x^2 - 121=

x^2 - 11^2=(*)

(x+11)(x-11)

4 0
3 years ago
Read 2 more answers
If mABD​, what are mABC and m​DBC?
Sedbober [7]

Answer:

45

Step-by-step explanation:

8 0
2 years ago
Solve for x. Evaluate and round your answer to 1 decimal place(tenths place). 10x=1200
Mandarinka [93]

Answer:

<h2>x = 3.1</h2>

Step-by-step explanation:

<h3>{10}^{x}  = 1200</h3>

<u>To solve first take logarithm to both sides</u>

That's

<h3>log_{10}(10) ^{x}  =  log_{10}(1200)</h3><h3 /><h3>log_{10}(10)^{x}  = x log_{10}(10)</h3>

But

<h3>log_{10}(10)  = 1</h3>

So we have

x =  log_{10}(1200)

<u>Write 1200 as a number with the factor 100</u>

That's

1200 = 100 × 12

So we have

<h3>x =  log_{10}(100 \times 12)</h3>

<u>Using the rules of logarithms</u>

That's

<h3>log_{a}(x \times y)  =  log_{a}(x)  +  log_{a}(y)</h3>

Rewrite the expression

That's

<h3>x =  log_{10}(100)  +  log_{10}(12)</h3><h3 /><h3>x =  log_{10}(10)^{2}  +  log_{10}(12)</h3><h3>x = 2 log_{10}(10)  +  log_{10}(12)</h3><h3>log_{10}(10)  = 1</h3><h3 /><h3>x = 2 +  log_{10}(12)</h3>

x = 3.079

So we have the final answer as

<h3>x = 3.1 to one decimal place</h3>

Hope this helps you

8 0
3 years ago
Other questions:
  • Makayla and ember went shopping for clothes and spent 262.00 if the tax rate is 5% what is Makayla and ember’s total after tax?
    11·2 answers
  • Katie bought 7 bags of candy at the store. She gave one bag to her sister and kept the rest for her friends. I each bag weighed
    10·2 answers
  • Write each decimal as a mixed number in simplest form.<br> 6. 3.6 <br><br> 7. 10.4<br><br> 8. 2.11
    5·1 answer
  • How many centimeters equal 9 meters
    10·1 answer
  • At a restaurant, three salads, two sandwiches, and one drink cost $17.75. One salad, one sandwich, and three drinks cost $10.75.
    11·1 answer
  • The coordinates J(2, 2), K(-1, 3), L(-2, -1) form a right triangle. True or False.
    12·2 answers
  • 4x7x5x6x7x6x6x6<br><br><br> yeah
    6·1 answer
  • 72 times 73? <br>Need help answering​
    10·2 answers
  • PLEASE HELP ME ANSWER THIS IT WILL HELP A LOT THANK YOU ​
    11·2 answers
  • Please help Me<br> Find The missing values in the ratio table then write equivalent ratios.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!