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bazaltina [42]
3 years ago
14

A researcher conducted a hypothesis test to see if students on average spend more than 1 hour per homework assignment. The level

of significance, a, selected was 0.05. This means that if on average they do spend exactly 1 hour per assignment, then there is a 5% chance that the erroneous conclusion will be made that students spend on average more than 1 hour per assignment.
a. Trueb. False
Mathematics
1 answer:
grandymaker [24]3 years ago
5 0

Answer:

a. True

Step-by-step explanation:

By ∝= 5% we mean that there are about 5 chances in 100 of incorrectly rejecting a true null hypothesis. To put it in another way , we say that we are 95% confident in making the correct decision.

In the given question the null hypothesis is

H0: u ≤ 1 hour and Ha:  u > 1 hour

So there is a 5% chance that the erroneous conclusion will be made that students spend on average more than 1 hour per assignment.

The given statement is true.

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On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 106 and a standard deviatio
DENIUS [597]

Answer:

Step-by-step explanation:

N(106,14²)

(calculated using excel, let me know if you were supposed to use a normal table) = 0.4715

85.34

Q1:96.56

Q3:115.44

IQR (which is Q3-Q1)= 115.44-96.56= 18.88

5 0
2 years ago
The volume of water in a plastic bottle is 12.3 oz. Determine whether the data value is from a discrete or continuous data set.
Elena L [17]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which best represents the center of the data set below?
MA_775_DIABLO [31]

Answer: mean = 318.3

Median =330

Mode= 200

Step-by-step explanation:

Mean (average) is the total sum of values in a given a data set ÷ number of values

= 3820/12

Mean= 318.3

Median= midpoint value in a given data set. When the data set is an even number, median is calculated with the 2 middle point values as n1 + n2/2

Step 1: we rearranged the data set from least to highest value to give

200,200,220, 240,300,320,340,360,380,400,420 and 440

Median= 320 + 340/2

=660/2 = 340

Mode is the value with highest frequency in a given data set, from the given question, mode = 200

Please mark ad brainliest

3 0
3 years ago
Read 2 more answers
You answer 95% of the questions correct in a 40 question test how much did u get wrong
RUDIKE [14]

Answer:

95% of 40 is 38. 2 questions are wrong.

Step-by-step explanation:

5 0
3 years ago
Devaughn is 5 years younger than Sydney. The sum of their ages is45. What is Sydney's age?
Verizon [17]
Let the age of devaughn be x and Sydney be y.
Then,x+y=45
x+5=y
y=x+5
here,
put y=x+y in x+y=45
then,
x+y=45
x+x+5=45
2x=40
x=20
now,
y=x+5
y=20+5
y=25
5 0
3 years ago
Read 2 more answers
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