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
BaLLatris [955]
3 years ago
6

Help please quick fast I’ll make you brainliest

Mathematics
1 answer:
Jlenok [28]3 years ago
3 0

Answer:

A is the answer

Step-by-step explanation:

You might be interested in
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past
Minchanka [31]
<h2><u>Answer with explanation</u>:</h2>

Let \mu be the distance traveled by deluxe tire .

As per given , we have

Null hypothesis : H_0 : \mu \geq50000

Alternative hypothesis : H_a : \mu

Since H_a is left-tailed and population standard deviation is known, thus we should perform left-tailed z-test.

Test statistic : z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

where, n= sample size

\overline{x}= sample mean

\mu= Population mean

s=sample standard deviation

For n= 31,\ \sigma=8000,\ \overline{x}=46,800\ \&\ s=46,800, we have

z=\dfrac{46800-50000}{\dfrac{8000}{\sqrt{31}}}=-2.23

By using z-value table,

P-value for left tailed test : P(z≤-2.23)=1-P(z<2.23)   [∵P(Z≤-z)=1-P(Z≤z)]

=1-0.9871=0.0129

 Decision : Since p value (0.0129) < significance level  (0.05), so we reject the null hypothesis .

[We reject the null hypothesis when p-value is less than the significance level .]

Conclusion : We do not have enough evidence at 0.05 significance level to support the claim that t its deluxe tire averages at least 50,000 miles before it needs to be replaced.

4 0
3 years ago
How to evaluate 4(x+2−5x) when x=2
Crank

Answer:

-24

Step-by-step explanation:

4(x+2−5x)

Combine like terms

4(2 -4x)

Distribute

8 -16x

Let x=2

8 - 16(2)

8 - 32

-24

8 0
2 years ago
Read 2 more answers
Max has a Starbucks' gift card for $50. HIs favorite drink is the S'mores Frappuccino. Each drink costs $4.25. How many frappucc
hram777 [196]

Answer:

4.25x ≤ 50

Number of drink = 11

Step-by-step explanation:

Given:

Amount of gift card = $50

Each drink cost = $4.25

Find:

Number of drink

Computation:

Assume;

Number of drink = x

So,

4.25x ≤ 50

x ≤ 11.76

so,

Number of drink = 11

5 0
3 years ago
This statement is justified by which property of equality?
Galina-37 [17]

Answer:

symmetric property

Step-by-step explanation:

with symmetric property if x=y then both values on either side of the equal sign will be equal

4 0
3 years ago
Evaluate ƒ(x) = –4x – 5 for x = –1.
11111nata11111 [884]
The answer would -1
4 0
3 years ago
Other questions:
  • Stacey is looking for a job. She wants her take-home pay to be at least $32,000$32,000. What is the least her salary can be if s
    12·2 answers
  • SOLVE THIS PLEASE AND EXPLAIN FOR FULL POINTS:)))
    6·1 answer
  • Tyler orders a meal that costs $15.If the tax rate is 6%, how much will the sales tax be on Tyler’s meal?
    10·1 answer
  • The moon is about 240,000 miles from earth . What is the distance written as a whole number multiplied by a power of ten
    7·2 answers
  • 7 3/9 - 2 4/9 =<br>11 3/4 - 5 1/4 =​
    12·1 answer
  • Order the following from least to greatest 143, 341, 341, 143, 14,000, 43,043
    10·2 answers
  • Rabbits are released into the woods where there are no other rabbits of this species. The function f(t) can be used to model the
    6·1 answer
  • Domain and range problem help please
    5·1 answer
  • I NEED HELP FAST IM FAILING MATH GIVING 50 POINTS
    5·1 answer
  • 6. The table shows the equations Mr. Berger discussed in math
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!