Tammy Todd

2020-10-20

The explanatory variable in the given study.

To determine:Whether the given explanatory variable is qualtitative or quantitative.

To determine:Whether the given explanatory variable is qualtitative or quantitative.

casincal

Skilled2020-10-21Added 82 answers

Explain:

Justification:

Explanatory variable: It is a type of independent variable, which can explain changes of the response variable. The researchers for a particular study of experiment manipulate an explanatory variable and there may be more than one explanatory variable. Lurking variable, confounding variable are the two types of explanatory variable.

Type of stain remover (gum or saliva) is an independent variable that is manipulated by researchers and it can explain the changes in the variables. There may be more than one explanatory variable. Thus, in the given study “Type of stain remover (gum or saliva)” is the explanatory variable.

Qualitative variable: A variable that is used for classification of individuals based on attributes or qualities or characteristic, are called categorical or qualitative variable.

Quantitative variable: A variable that provides numerical values of individual and arithmetic operations such as addition and subtraction produee meaningful sesults-are called quantitative variables.

In this problem, the variable is “Type of stain remover (gum or saliva)”. This variable denotes a quality or attributes (brand) and is used to classify the individuals according to their type of stain remover, even if numerical values are assigned to the chew levels, addition and subtraction (numerical measures) of these will not yield any meaningful results. Hence, “Type of stain remover (gum or saliva)” is a qualitative variable.

Justification:

Explanatory variable: It is a type of independent variable, which can explain changes of the response variable. The researchers for a particular study of experiment manipulate an explanatory variable and there may be more than one explanatory variable. Lurking variable, confounding variable are the two types of explanatory variable.

Type of stain remover (gum or saliva) is an independent variable that is manipulated by researchers and it can explain the changes in the variables. There may be more than one explanatory variable. Thus, in the given study “Type of stain remover (gum or saliva)” is the explanatory variable.

Qualitative variable: A variable that is used for classification of individuals based on attributes or qualities or characteristic, are called categorical or qualitative variable.

Quantitative variable: A variable that provides numerical values of individual and arithmetic operations such as addition and subtraction produee meaningful sesults-are called quantitative variables.

In this problem, the variable is “Type of stain remover (gum or saliva)”. This variable denotes a quality or attributes (brand) and is used to classify the individuals according to their type of stain remover, even if numerical values are assigned to the chew levels, addition and subtraction (numerical measures) of these will not yield any meaningful results. Hence, “Type of stain remover (gum or saliva)” is a qualitative variable.

Read carefully and choose only one option

A statistic is an unbiased estimator of a parameter when (a) the statistic is calculated from a random sample. (b) in a single sample, the value of the statistic is equal to the value of the parameter. (c) in many samples, the values of the statistic are very close to the value of the parameter. (d) in many samples, the values of the statistic are centered at the value of the parameter. (e) in many samples, the distribution of the statistic has a shape that is approximately NormalConstruct all random samples consisting three observations from the given data. Arrange the observations in ascending order without replacement and repetition.

86 89 92 95 98.Find the mean of the following data: 12,10,15,10,16,12,10,15,15,13.

The equation has a positive slope and a negativey-intercept.

1) y=−2x−3

2) y=2−3x

3) y=2+3x

4) y=−2+3xWhat term refers to the standard deviation of the sampling distribution?

Fill in the blanks to make the statement true: $30\%of\u20b9360=\_\_\_\_\_\_\_\_$.

What percent of $240$ is $30$$?$

The first 15 digits of pi are as follows: 3.14159265358979

The frequency distribution table for the digits is as follows:

$\begin{array}{|cc|}\hline DIGIT& FREQUENCY\\ 1& 2\\ 2& 1\\ 3& 2\\ 4& 1\\ 5& 3\\ 6& 1\\ 7& 1\\ 8& 1\\ 9& 3\\ \hline\end{array}$

Which two digits appear for 3 times each?

A) 1, 7

B) 2, 6

C) 5, 9<br<D) 3, 8How to write

as a percent?$\frac{2}{20}$ What is the simple interest of a loan for $1000 with 5 percent interest after 3 years?

What number is 12% of 45?

The probability that an automobile being filled with gasoline also needs an oil change is 0.30; the probability that it needs a new oil filter is 0.40; and the probability that both the oil and the filter need changing is 0.10. (a) If the oil has to be changed, what is the probability that a new oil filter is needed? (b) If a new oil filter is needed, what is the probability that the oil has to be changed?

Leasing a car. The price of the car is$45,000. You have $3000 for a down payment. The term of the lease is and the interest rate is 3.5% APR. The buyout on the lease is51% of its purchase price and it is due at the end of the term. What are the monthly lease payments (before tax)?

The mean of sample A is significantly different than the mean of sample B. Sample A: $59,33,74,62,87,73$ Sample B: $53,67,72,57,93,79$ Use a two-tailed $t$-test of independent samples for the above hypothesis and data. What is the $p$-value?

What is mean and its advantages?