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Rudik [331]
3 years ago
13

The alpha level that a researcher sets at the beginning of the experiment is the level to which he wishes to limit the probabili

ty of making the error of____________
Mathematics
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

not rejecting the null hypothesis when it is false.

Step-by-step explanation:

Significance level or alpha level is the probability of rejecting the null hypothesis when null hypothesis is true. It is considered as a probability of making a wrong decision. It is a statistical test which determines probability of type I error. If the obtained probability is equal of less than critical probability value then reject the null hypothesis.

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3 years ago
A class conducts a survey of 1,000 students the survey reveals that 20% of the students speak Spanish. How many students speak S
Misha Larkins [42]

Answer:

200 students

Step-by-step explanation:

From the question;

  • Total number of students = 1,000
  • % percentage of students that speak Spanish= 20%

Required to determine the number of students that speak Spanish;

We are going to use;

  • Number of students that speak Spanish = % of student that speak Spanish × Total students

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Therefore, the number of students that speak Spanish is 200

7 0
3 years ago
Marco took a bunch of candies and divided them into 3 even groups. If each group has 21 candies, how many candies are there?
shepuryov [24]
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7 0
3 years ago
Read 2 more answers
The ratio of two complementary angles is 7:2. What is the measure, in degrees, of the larger angle?
lisabon 2012 [21]

Answer:

70 degrees

Step-by-step explanation:

Complementary angles sum up to 90.

To find the larger angle, you find the total of the values in the ratio, divide the larger value of the ratio by the total and multiply it by 90.

(7/7+2)×90=7/9×90

=7×10

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OR

Write an equation:

7x+2x=90

9x=90

x=10

Then multiply x by the larger value.

7x=7 (10)=70

6 0
3 years ago
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