WorksheetsStat & Prob M3
Total questions: 15
Worksheet time: 3mins
This hypothesis states that there is no difference between population parameters and the hypothesized value.
alternative hypothesis
two-tailed hypothesis
hypothesis
null hypothesis
When the value of parameter has significant difference with the hypothesized value, then it is called ________________.
alternative hypothesis
null hypothesis
one-tailed test
two-tailed test
The sign of the alternative hypothesis in a left-tailed test is always_________.
equal
greater than
less than
not equal
If the researcher wishes to test the claim that the mean of the population is 75, the appropriate null hypothesis is:
𝜇≤75
𝜇=75
𝜇≥75
𝜇≠75
A researcher thinks that if expectant mothers use vitamins, the birth weight of the babies will increase. The average birth weight of the population is 3.9 kgs. What is the alternative hypothesis?
𝐻𝑎:𝜇>3.9
𝐻𝑎:𝜇<3.9
𝐻𝑎:𝜇=3.9
𝐻𝑎:𝜇≠3.9
According to the report, the average weight of Filipino newborn baby is 2. 8 kgs. Mellissa wants to perform a significance test to see if this holds true in her nation. She takes a random sample of babies and observes that the average weight of newborns is 3kgs. What is the null hypothesis?
𝐻𝑎:𝜇>2.8
𝐻𝑎:𝜇<2.8
𝐻𝑎:𝜇=2.8
𝐻𝑎:𝜇≠2.8
What kind of hypothesis is illustrated below?
The mean score of all Grade 11 students is higher than 75.
one-tailed test
two-tailed test
null hypothesis
alternative hypothesis
“A modern approach in advertisement will not increase the demand for a product.” This is an example of _______________ hypothesis.
null
mean
alternative
right-tailed
What is the alternative hypothesis in the following statement?
“The number of defective batteries produced by the company is not equal to 15 batteries a day as claimed by the manager.”
μ=15
μ≠15
μ>15
μ<15
Which is the correct null hypothesis of the given statement?
“According to the owner, an average of 500 people buys foods at McDonalds during breakfast and lunch hours.”
𝐻𝑜=500
𝐻𝑜≠500
𝐻𝑜<500
𝐻𝑜>500
On average, the household electricity consumption in the country was about 248.1-kilowatt hours in 2015. Electricity was used primarily for lighting purposes, cooking, recreation, and space cooling. Which inequality symbols are correct (=, ≠, ≥, <, ≤, >) for the null and alternative hypotheses: 𝐻𝑜: μ __ 248.1 𝐻𝑎: μ __ 248.1?
= ,>
<,>
=,≠
≤,≥
Which is the correct alternative hypothesis for one-tailed test?
μ=25
μ≠25
μ≥25
μ<25
A teacher in Math announced that the mean score of Grade 9 students in the first quarterly assessment in Mathematics was 89 and standard deviation was 6. One student, who believed that the mean score was less than this, randomly selected 30 students and computed the mean score. What kind of test of hypothesis can describe this?
left-tailed
two-tailed
right-tailed
multiple-tailed
Determine the null and alternative hypothesis.
“It was claimed that the average monthly income of aircraft pilot was
₱116, 714.00. A random sample of 45 pilots is selected and it is found out that the average monthly salary is ₱ 120,000. Using a 0.01 level of significance, can it be concluded that there is an increase in the average monthly income of pilot?”
𝐻𝑜: μ=₱116,714.00,𝐻𝑎: μ≤₱116,714.00
𝐻𝑜: μ=₱116,714.00,𝐻𝑎: μ≠₱116,714.00
𝐻𝑜: μ=₱116,714.00,𝐻𝑎: μ>₱116,714.00
𝐻𝑜: μ=₱116,714.00,𝐻𝑎: μ<₱116,714.00
Which directional test is illustrated in the given problem below?
In a recent survey, the average amount of money students have in their wallet is ₱200.00 with standard deviation of 45. A teacher feels that the average amount is lower. She surveyed 80 randomly selected students and found that the average amount is ₱35.
left-tailed
two-tailed
alternative
right-tailed
