# The following table summarizes

Question 1

The following table summarizes the number of students at Kiddies Headstart Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

1. a) A student is selected at random. Find the probability that
2. the student is male and a toddler
3. the student is female or an infant

iii. the student is an infant, given that they are female.

1. b) Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response.

c)Are the events ‘Infant’ and ‘Female’ Independent? Justify your response.

# The following table summarizes

Question 1_

The following table summarizes the number of students at Kiddies Head start Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

1. a)      A student is selected at random. Find the probability that

i)  the student is male and a toddler

ii)  the student is female or an infant

iii.  the student is an infant, given that they are female.

1. b)  Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response

1. c)  Are the events ‘Infant’ and ‘Female’ Independent? Justify your response

# The following table summarizes

The following table summarizes the number of students at Kiddies Headstart Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

a)      A student is selected at random. Find the probability that

i. the student is male and a toddler

ii. the student is female or an infant

iii. the student is an infant, given that they are female.

b) Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response

c) Are the events ‘Infant’ and ‘Female’ Independent? Justify your response

# The following table summarizes

Question 1

The following table summarizes the number of students at Kiddies Head start Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

1. a)      A student is selected at random. Find the probability that
2. the student is male and a toddler
3. the student is female or an infant

iii. the student is an infant, given that they are female.

1. b)      Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response
2. c)      Are the events ‘Infant’ and ‘Female’ Independent? Justify your response

# The following table summarizes

The following table summarizes the results of a study on SAT prep courses, comparing SAT scores of students in a private preparation class, a high school preparation class, and no preparation class. Use the information from the table to answer the remaining questions.
Treatment
Number of Observations
Sample Mean
Sum of Squares (SS)
Private prep class 40 610 97,500.00
High school prep class 40 600 101,400.00
No prep class 40 590 111,150.00

Using the data provided, complete the partial ANOVA summary table that follows. (Hint: T, the treatment total, can be calculated as the sample mean times the number of observations. G, the grand total, can be calculated from the values of T once you have calculated them.)
Source
Sum of Squares (SS)
df
Mean Square (MS)
Between treatments
Within treatments

In some ANOVA summary tables you will see, the labels in the first (source) column are Treatment, Error, and Total. Which of the following reasons best explains why the within-treatments sum of squares is sometimes referred to as the “error sum of squares”?
Differences among members of the sample who received the same treatment occur when the researcher makes an error, and thus these differences are sometimes referred to as “error.”

The within-treatments sum of squares measures treatment effects as well as random, unsystematic differences within each of the samples assigned to each of the treatments. These differences represent all of the variations that could occur in a study; therefore, they are sometimes referred to as “error.”

Differences among members of the sample who received the same treatment occur because some treatments are more effective than others, so it would be an error to receive the less superior treatments.

The within-treatments sum of squares measures random, unsystematic differences within each of the samples assigned to each of the treatments. These differences are not due to treatment effects because everyone within each sample received the same treatment; therefore, the differences are sometimes referred to as “error.”

In ANOVA, the F test statistic is the    of the between-treatments variance and the within-treatments variance. The value of the F test statistic is    .

When the null hypothesis is true, the F test statistic is     . When the null hypothesis is false, the F test statistic is most likely     . In general, you should reject the null hypothesis for    .

# The following table summarizes

Question 1

The following table summarizes the number of students at Kiddies Head start Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

1. a)      A student is selected at random. Find the probability that
2. the student is male and a toddler
3. the student is female or an infant

iii. the student is an infant, given that they are female.

1. b)      Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response
2. c)      Are the events ‘Infant’ and ‘Female’ Independent? Justify your response

# The following table summarizes

The following table summarizes the number of students at a

Preschool, categorized by the students’ gender and whether they belong to the infant or toddler section

 Infant Toddler Total Male 12 28 Female 34 26 Total 100

a) A student is selected at random. Find the probability that
i. the student is male and a toddler
ii. the student is female or an infant
iii. the student is an infant, given that they are female.

b) Are the events ‘Infant’ and ‘Female’ Mutually Exclusive? Justify your response
c) Are the events ‘Infant’ and ‘Female’ Independent? Justify your response

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