How can mathematicians determine the distribution of data?

They look at how the data is spread out when it is organized on a graph

They look for the most popular answer

They find the mean by adding all the numbers and dividing by the total

They look for the middle number in the data

A study on the impact of motivation on the performance of UiTM Sarawak students will be done by a team of researchers. 150 students of UiTM Sarawak will be chosen as respondents of this study. What is the sample?

A list of all UiTM Sarawak students

A p-value of P=0.05 means

there is a 5% probability the results are due to chance

there is a 0.05% probability the results are due to chance

there is a 0.5% probability the results are due to chance

there is a 50% probability the results are due to chance

Patrick claims that he can achieve a score of at least 215 in bowling. Write the null and alternative hypotheses and state which hypothesis represents the claim.

H 0 : μ ≥ 215 Claim H a : μ < 215

H 0 : μ ≤ 215 H a : μ > 215 Claim

H 0 : μ = 215 Claim H a : μ ≠ 215

H 0 : μ ≤ 215 Claim H a : μ > 215

Jeremy claims that he can finish a math test with no more than 3 incorrect answers. Write the null and alternative hypotheses and state which hypothesis represents the claim.

H 0 : μ ≤ 3 Claim H a : μ > 3

H 0 : μ ≥ 3 H a : μ < 3 Claim

H 0 : μ = 3 H a : μ ≠ 3 Claim

H 0 : μ = 3 Claim H a : μ ≠ 3

Which of the following is the first step in hypothesis test?

State your null & alternative hypotheses

What does it mean when a test is statistically significant?

the test statistic had a P-value lower than the alpha level

it has reached alpha level status

the test statistic had a P-value higher than the alpha level

it is important in practical terms

A Gallup Poll asked a random sample of 1240 adults, "Do you play video games?" Suppose the true proportion of all adults who play video games is p = .26. What is the standard deviation of the sampling distribution of p̂? Check that the 10% condition is met.

The 10% condition is met. σ p̂ = .0126

The 10% condition is met. σp̂ = .0074

The 10% condition is met. σp̂ = .26

To find the proportion of students who have taken a COVID test, an SRS of 400 students was taken from an area high school with a population of 1600 students. The statewide proportion of students who have taken a COVID test is p = .48. What is the standard deviation of the sampling distribution?

The Large Counts Condition is not met.

In a recent state election, 58% of the voters were Democratic. The total percent of Democratic voters in the state is actually 52%.

52% is a parameter and 58% is a statistic.

52% is a statistic and 58% is a parameter.

I am unable to determine parameters with the given information.

Both 52% and 58% are parameters.

When the mean of a sampling distribution is the same as that of the population, we say that

it is an unbiased estimator of the population

it is an unbiased estimator of the statistic

it is a low variability estimator of the population

it is a biased estimator of the population

What is the format for interpreting a confidence interval?

We are C% confident that the interval from ___ to ___ captures the [parameter in context].

The interval from ___ to ___ captures the true mean in context.

C% of samples of the same size taken from the same population will capture the parameter in question

There is convincing evidence that C% gives the interval (___, ___) capturing the parameter in question.

Increasing the sample size __________ the confidence interval.

there is not enough evidence to determine the answer

Are the conditions met? A recent poll of 738 randomly selected customers of a major US cell-phone carrier found that 170 of them had walked into something or someone while talking on a cell phone.

There is not enough data to determine.

Which of the following changes to a study would result in a smaller confidence interval?

decreasing the confidence level, increasing the sample size.

increasing the confidence level, increasing the sample size

increasing the confidence level, decreasing the sample size

decreasing the confidence level, decreasing the sample size

Stats Unit 7.1 - 7.4

Authored by Anna Orille

Mathematics

12th Grade

Used 1+ times

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is a smaller, representative group drawn from a population?

unit

sample

parameter

statistic

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

This occurs when a sample is collected in such a way that some members of the intended population are less likely to be included than others.

sampling error

sampling bias

random sampling

clustered sampling

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is a characteristic of a population?

unit

sample

parameter

statistic

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the term in statistics for the entire collection or group of individuals being studied?

population

sample

parameter

statistic

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is a characteristic of a sample?

parameter

statistic

categorical variable

numerical variable

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the population:
A survey of 500 adults in the U.S. found that 54% drink coffee daily.

A. Collection of the 500 adults surveyed

B. Collection of all adults in the U.S.

C. 54%

D. 500

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the sample:
A survey of 500 adults in the U.S. found that 54% drink coffee daily.

A. Collection of the 500 adults surveyed

B. Collection of all adults in the U.S.

C. 54%

D. 500

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Stats Unit 7.1 - 7.4

What is a smaller, representative group drawn from a population?

This occurs when a sample is collected in such a way that some members of the intended population are less likely to be included than others.

What is a characteristic of a population?

What is the term in statistics for the entire collection or group of individuals being studied?

What is a characteristic of a sample?

Identify the population: A survey of 500 adults in the U.S. found that 54% drink coffee daily.

Identify the sample: A survey of 500 adults in the U.S. found that 54% drink coffee daily.

True or false: In the statement “A survey of 500 adults in the U.S. found that 54% drink coffee daily” 54% is a parameter.

How can mathematicians determine the distribution of data?

A study on the impact of motivation on the performance of UiTM Sarawak students will be done by a team of researchers. 150 students of UiTM Sarawak will be chosen as respondents of this study.What is the sample?

Access all questions and much more by creating a free account

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Discover more resources for Mathematics

Identify the population:
A survey of 500 adults in the U.S. found that 54% drink coffee daily.

Identify the sample:
A survey of 500 adults in the U.S. found that 54% drink coffee daily.

True or false:
In the statement “A survey of 500 adults in the U.S. found that 54% drink coffee daily” 54% is a parameter.

A study on the impact of motivation on the performance of UiTM Sarawak students will be done by a team of researchers. 150 students of UiTM Sarawak will be chosen as respondents of this study.

What is the sample?