test? Place your answer, rounded to 3 decimal places in the blank. For example, .123 would be a legitimate entry.

Question 13 of 20
1.0/ 1.0 Points
Accepted characters
: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as
thousands separator, 5 000), "E" or "e" (used in scientific notation).
NOTE:
For scientific notation, a period MUST
be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.
Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a
normal distribution with
= 2.8%. A random sample of 16 Australian bank stocks has a sample mean dividend
yield of 8.91%. For the entire Australian stock market, the mean dividend yield is
= 6.4%. If you wanted to test
to determine if these data indicate that the dividend yield of all Australian bank stocks is higher than 6.4%, what is
the value of the test statistic? Place your answer, rounded to 3 decimal places, in the blank. For example, 2.345
would be a legitimate entry.
3.586

Question 14 of 20
0.0/ 1.0 Points
Accepted characters
: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as
thousands separator, 5 000), "E" or "e" (used in scientific notation).
NOTE:
For scientific notation, a period MUST
be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.
Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a
normal distribution with
= 2.8%. A random sample of 16 Australian bank stocks has a sample mean dividend

yield of 8.91%. For the entire Australian stock market, the mean dividend yield is
= 6.4%. If you wanted to test,
at a .05 level of significance, to determine if these data indicate that the dividend yield of all Australian bank stocks
is higher than 6.4% what is the critical value that you would use? Place your answer, rounded to 2 decimal places, in
the blank. For example, 2.34 would be a legitimate entry.
1.64

Question 15 of 20
1.0/ 1.0 Points
Accepted characters
: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as
thousands separator, 5 000), "E" or "e" (used in scientific notation).
NOTE:
For scientific notation, a period MUST
be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.
The CEO of a software company is committed to expanding the proportion of highly qualified women in the
organization’s staff of salespersons. He believes that the proportion of women in similar sales positions across the
country is less than 45%. Hoping to find support for his belief, he directs you to test
H
0
: p
.45 vs H
1
: p < .45.