(Question A) A test for comparing two population means is conducted at a 5% sign

Question

(Question A)

A test for comparing two population means is conducted at a 5% significance level. The p-value is determined to be 0.09.
The null hypothesis:

-must be rejected
-has been incorrectly formulated
-cannot be rejected
-could be rejected, depending on the sample size

(Question B)

Predictive analytics…

-detects patterns in historical data and extrapolates them forward in time
-identifies the best alternatives to minimize or maximize an objective
-uses data to determine the best course of action to be executed in a given situation
-summarizes data into meaningful charts and reports that can be standardized or customized

(Question C)

The most critical step in a decision making process is

-determining the set of alternatives                       
-evaluating the alternatives                       
-identifying and defining the problem                   
-choosing an alternative

(Question D)

Anova is a test for the equality of…

-many population variances
-many population means
-many sample means
-many sample variances

(Question E)

Which of the following examples best describes big data?

-Facebook processes one thousands picture uploads per day
-Five hundreds cell-phone owners generate vast amounts of data by calling, texting, tweeting, and browsing the web on a daily basis
-The amount of data created every 48 hours is equivalent to the entire amount of data created from the dawn of civilization until the year 2003
-Walmart handles hundreds purchase transactions per hour

Explanation / Answer

Ans:

1)p-value=0.09

alpha=0.05

As,p-value>0.05,we do not reject the null hypothesis.

cannot be rejected

2)Predictive analytics detects patterns in historical data and extrapolates them forward in time.

Predictive analytics is the branch of the advanceda nalytics which is used to make predictions about unknown future events. Predictive analytics uses many techniques from data mining, statistics, modeling, machine learning, and artificial intelligence to analyze current data to make predictions about future.

3)The most critical step in a decision making process is identifying and defining the problem.

4)Anova is a test for the equality of many population means.

5)Five hundreds cell-phone owners generate vast amounts of data by calling, texting, tweeting, and browsing the web on a daily basis

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