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
Alla [95]
3 years ago
8

Specifications call for the wall thickness of two-liter polycarbonate bottles to average 4.0 mils. A quality control engineer sa

mples 7 two-liter polycarbonate bottles from a large batch and measures the wall thickness (in mils) in each. The results are: 3.999, 4.037, 4.116, 4.063, 3.969, 3.955, and 4.091. It is desired to test H0 : μ = 4.0 versus H1 : μ ≠ 4.0.Make a dotplot of the seven value.

Mathematics
1 answer:
bija089 [108]3 years ago
8 0

Answer:

The null hypothesis μ=4.0 could not be rejected.

Step-by-step explanation:

In this problem we have to perform a hypothesis test of the mean, with s.d. of the population unknown.

The sample is: [3.999, 4.037, 4.116, 4.063, 3.969, 3.955, 4.091]

This sample has a mean of 4.033 and a standard deviation of 0.061.

The null and alternative hypothesis are:

H_0: \mu = 4.0\\\\H_1: \mu \neq 4.0

We assume a significance level of 0.05.

The test statistic for this test is:

t=\frac{M-\mu}{\sigma}=\frac{4.033-4.0}{0.061}=0.536

We have a sample size n=7, so the degrees of freedom are 7-1=6.

For a two-tailed test, t=0.536 and df=6, the P-value can be look up in a t-table.

The P-value is 0.61. Is greater than the significance level, so the effect is not significant and the null hypothesis can't be rejected.

You might be interested in
Pleeeeeezzzzzzzz answer this​
zimovet [89]

Answer:49 degrees

Step-by-step explanation: because all the opposite angles are same and alternative angles makes it same too plz mark me brainiest

3 0
3 years ago
Due to concerns about the underinflation of footballs, the National Football League (NFL) created a series of standards that mus
marshall27 [118]

Answer: 13.5/12.5

Step-by-step explanation:

6 0
3 years ago
Simplify 3ab + 4ab + 5
Anettt [7]
<span>Simplify 3ab + 4ab + 5
= 7ab + 5 (combine like terms)

hope it helps</span>
5 0
3 years ago
Read 2 more answers
I just need this one box.
Darya [45]

Answer:

i would help if i no it

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The troposphere extends from the Earth's surface to a height of 6–12 miles, depending on the location and the season. If a plane
Anni [7]

Answer:

2.8 miles higher the plane go without leaving the troposphere?

Step-by-step explanation:

Troposphere height on different locations= 6-12 miles  

plane altitude at present flight = 5.8 miles.  

Troposphere deepness from the present flight= 8.6 miles  

So  from present altitude till troposphere=   8.6-5.8= 2.8 miles  

8 0
3 years ago
Other questions:
  • Plz help i will give brainliest
    10·2 answers
  • The value of p varies directly with q, and p=8 when q=2. What is the value of p when q=7
    12·1 answer
  • Question : What value of t corresponds to the first day that the sun is 20° north of due east at sunrise? Round your answer to t
    7·1 answer
  • Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You
    11·2 answers
  • Bella made a drawing of her rectangular bedroom with the scale of 1 inch=3 feet. the drawing was 6 inches long by 4 inches wide.
    6·1 answer
  • A hotel patron starts at the fifth floor and goes up seven floors to meet a friend. How many levels, and in which direction, mus
    14·1 answer
  • The population of a city decreases by 3.5% per year . If this year´s population is 195,000 what will next year´s population be ,
    15·2 answers
  • I will give brainliest
    7·1 answer
  • Find the equation of the line in slope-intercept form (-1,-1) and (1,0)
    12·1 answer
  • The following relation is a function:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!