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
Wittaler [7]
2 years ago
7

Machines at a factory produce circular washers with a specified diameter. The quality control manager at the factory periodicall

y tests a random sample of washers to be sure that greater than 90 percent of the washers are produced with the specified diameter. The null hypothesis of the test is that the proportion of all washers produced with the specified diameter is equal to 90 percent. The alternative hypothesis is that the proportion of all washers produced with the specified diameter is greater than 90 percent.
Which of the following describes a Type I error that could result from the test?

A) The test does not provide convincing evidence that the proportion is greater than 90%, but the actual proportion is greater than 90%.

B) The test does not provide convincing evidence that the proportion is greater than 90%, but the actual proportion is equal to 90%.

C) The test provides convincing evidence that the proportion is greater than 90%, but the actual proportion is equal to 90%.

D) The test provides convincing evidence that the proportion is greater than 90%, but the actual proportion is greater than 90%.

E) A Type I error is not possible for this hypothesis test.
Mathematics
1 answer:
swat322 years ago
0 0

Answer:

The Type I error that could result from the test is that The test provides convincing evidence that the proportion is greater than 90%, but the actual proportion is equal to 90%.

Step-by-step explanation:

We are given that machines at a factory produce circular washers with a specified diameter.

The quality control manager at the factory periodically tests a random sample of washers to be sure that greater than 90 percent of the washers are produced with the specified diameter.

<u><em>Let p = proportion of all washers produced with the specified diameter</em></u>

So, Null hypothesis, H_0 : p = 90%

Alternate Hypothesis, H_A : p > 90%

Here, null hypothesis states that the proportion of all washers produced with the specified diameter is equal to 90%.

On the other hand, alternate hypothesis states that the proportion of all washers produced with the specified diameter is greater than 90%.

Now, Type I error states the Probability of rejecting null hypothesis given the fact that null hypothesis was true or in other words Probability of rejecting a true hypothesis.

So, according to our question Type I error would be that the test provides convincing evidence that the proportion is greater than 90%, but the actual proportion is equal to 90%.

You might be interested in
Find the surface area of the cube.<br><br>​
Paul [167]

Answer:

I think the answer is 29.04 cm. squared. Hope this helps!

6 0
1 year ago
The difference between the acute angles of a right angled triangle is 72degree find them .
MaRussiya [10]

The 2 angles add up to 90 degrees so

x + y = 90, also:-

x - y = 72 (given)

adding the 2 equations:-

2x = 162

x = 81

and therefore

y + 81 = 90

y = 9


Answer the 2 angles are 81 and 9 degrees

5 0
1 year ago
Penny earns $580 more than half of Karen´s salary. If p represents Penny´s salary, write an expression that represents the amoun
nikitadnepr [17]

Answer:

\frac{p}{2} + $580

Step-by-step explanation:

p = Penny's salary

Karen's salary = $580 more than half of p

We can use the fraction \frac{p}{2} to represent half of p.

Since Karen's salary is $580 more, her salary is $580 + \frac{p}{2} .

4 0
1 year ago
Use the binomial expression (p+q)n
zvonat [6]

Answer:

{0.16807, 0.36015, 0.3087, 0.1323, 0.02835, 0.00243}

Step-by-step explanation:

The expansion of (p+q)^n for n = 5 is ...

(p+q)^5 = p^5 +5·p^4·q +10·p^3·q^2 +10·p^2·q^3 +5·p·q^4 +q^5

When the probability p=0.3 and q = 1-p = 0.7 the terms of this series correspond to the probabilities of 5, 4, 3, 2, 1, and 0 favorable outcomes out of 5 trials.

For example, p^5 = 0.3^5 = 0.00243 is the probability of 5 favorable outcomes in 5 trials where the probability of each favorable outcome is 0.3.

___

The attachment shows the calculation of these numbers using a graphing calculator. It lists them in reverse order of the expansion of (p+q)^5 shown above, so that they are the probabilities of 0–5 favorable outcomes in the order 0–5.

3 0
2 years ago
Help pls. Due 10/4/18
luda_lava [24]
Write down

15-80

Solve it by adding 15 to -80

The final answer is -65
7 0
1 year ago
Read 2 more answers
Other questions:
  • The function in the table below shows the relationship between the total number of houses built in an area and the nunber of mon
    10·1 answer
  • Please help
    12·1 answer
  • A post 4 feet tall casts a shadow 3.5 feet long. A tree at the same time of day casts a shadow 24.5 feet long. How tall is the t
    5·2 answers
  • Find the linear that is the best fit for the given data. Round decimals values to the nearest hundredth, if necessary
    5·1 answer
  • tony spent $60.54 and bought 3 packs of notebooks and a calculator. how much does a pack of notebooks cost if a calculator costs
    11·1 answer
  • HELP PLEASE!!
    7·1 answer
  • Two circles that have two common external tangents but no common internal tangents:
    6·1 answer
  • Ellis makes some biscuits. For every 200g of flour he uses, he needs 75g of butter
    14·1 answer
  • Help!!! This is a little confusing
    8·2 answers
  • I NEED HELP ASAP Plot the image of point C under a dilation about point P with a scale factor of 2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!