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
slamgirl [31]
3 years ago
13

A company wants to establish that the mean life of its batteries, when used in a wireless mouse, is over 183 days. The data will

consist of the life lengths of batteries in 64 different wireless mice.
a) Formulate the null and alternative hypotheses.

b) If the true mean is 190 days, what error can be made?
Mathematics
1 answer:
enyata [817]3 years ago
4 0

Answer:

a) Null and alternative hypotheses are:

H_{0}: mu=183 days

H_{a}: mu>183 days

b) If the true mean is 190 days, Type II error can be made.

Step-by-step explanation:

Let mu be the mean life of the batteries of the company when it is used in a wireless mouse

Null and alternative hypotheses are:

H_{0}: mu=183 days

H_{a}: mu>183 days

Type II error happens if we fail to reject the null hypothesis, when actually the alternative hypothesis is true.

That is if we conclude that mean life of the batteries of the company when it is used in a wireless mouse is at most 183 days, but actually mean life is 190 hours, we make a Type II error.

You might be interested in
Given points A (-5, 6) and B (7, -1), find: Distance, Midpoint, and Slope
a_sh-v [17]
We have that
<span>points A (-5, 6) and B (7, -1)

Part A)
find the distance
d=</span>√[(y2-y1)²+(x2-x1)²]-------> d=√[(-1-6)²+(7+5)²]----> d=√(49+144)
d=√193  units

Part B)
find the midpoint
ABx=(x1+x2)/2-----> (-5+7)/2-----> ABx=1
ABy=(y1+y2)/2-----> (-1+6)/2-----> ABy=2.5

the midpoint is (1,2.5)

Part C)
find the slope
m=(y2-y1)/(x2-x1)-----> m=(-1-6)/(7+5)--------> m=-7/12

the slope m=-7/12
4 0
3 years ago
Please help me will be marked brainlist
Sholpan [36]

The answer is 3 days. My work is in the pic in case you need it

7 0
3 years ago
Simplify the expression in detail plz
gayaneshka [121]
<span>(18<span>t<span><span>​^2</span><span>​​ </span></span></span>+ 9<span>t^<span><span>​2</span><span>​​</span></span></span>) + (−7t −3t) + 20

</span><span><span>27<span>t<span><span>​^2</span><span>​​ </span></span></span>− 10t + 20</span><span>
</span></span><span>

</span>
5 0
3 years ago
Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be _____.. a. $8.20 b. $10.30 c. $12.
Anton [14]

Step-by-step explanation:

The approximate tip is - 12.30$

Because bill is 81.79$

and tip - 15%

therefore bill amount divided by 15/100

==> 81.79* 15% is 12.30$

4 0
3 years ago
Read 2 more answers
A
DIA [1.3K]

Answer:

qwertyuo;kjghjkl;'

Step-by-step explanation:

43r567890op0oy76t43rtbhjm,ju765

5 0
3 years ago
Other questions:
  • What is 360 to 30 in ratio
    8·2 answers
  • At the produce counter, 71⁄5 pounds of seedless grapes cost $12.89. How much would 3 pounds cost?
    12·1 answer
  • Write an equation of the line that is perpendicular to -x+y=15 and passes through the point (2,-5)
    7·1 answer
  • Peaches are being sold for $2 per pound.The customer created a model to represent the total cost of peaches bought. If x represe
    13·2 answers
  • Solve x3 = 64 over 27
    5·2 answers
  • Power Series Differential equation
    5·1 answer
  • Please help me out and I'll mark you Brainllest.
    11·2 answers
  • Question 12
    8·1 answer
  • What is the arc length of a semicircle with a radius of 14?
    12·1 answer
  • Need help with this question ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!