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Alika [10]
1 year ago
11

Herb, a tennis player, has been struggling to develop a more consistent serve. He made the following remark to his partner durin

g the second set of a recent match: "I feel like I'm making progress. I haven't double-faulted once today." He then served two double-faults, which caused him to say, "Every time I say I haven't double-faulted, I immediately start to." Herb's perception may have been influenced by:
Instructions: In order to receive full credit, you must make a selection for each option. For correct answer(s), click the box once to place a check mark. For incorrect answer(s), click the option twice to empty the box.

regression to the mean.unanswered
the availability huerisitic.unanswered
the sunk cost effect.unanswered
the present-aim standard of rationality.
Mathematics
1 answer:
klasskru [66]1 year ago
5 0

Answer:

Check once on regression to the mean

Check once on the availability hubristic

Check twice on sink cost effect

Check twice on the present aim standard of rationality.

Step-by-step explanation:

Since herb is driven by emotion and happenstance and not by actual overall statistics this seems like the way to answer the question.

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A recent survey of 8,000 high school students found that the mean price of a prom dress was $195.00 with a standard deviation of
KiRa [710]

To calculate the z-statistic, we must first calculate the standard error.

Standard error is standard deviation divided by the square root of the population. In this case, it is equal to 2.68.

The z-score is defined the distance from the sample to the population mean in units of standard error.

z = (195 – 208)/2.68 = -4.86

5 0
2 years ago
the dot plot above identifies the number of pets living with each of 20 families in an apartment building .what fraction of fami
harkovskaia [24]

Answer:

B. ⅕

Step-by-step explanation:

Fraction of families having more than 2 pets = families with pets of 3 and above ÷ total number of families in the apartment

From the dot plot above, 3 families have 3 pets, and 1 family has 4 pets.

Number of families with more than 2 pets = 3 + 1 = 4

Fraction of families with more than 3 pets = \frac{4}{20} = \frac{1}{5}

4 0
1 year ago
A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all
fredd [130]
The answer is B. 3 feet
3 0
1 year ago
A sociologist studying the difference in ages between husbands and wives obtained a random sample of 55 married couples. The mea
zalisa [80]

Answer:

2.1/√55

Step-by-step explanation:

simga divided by sample size

8 0
2 years ago
Which of the following is NOT a property of the​ chi-square distribution?
LenKa [72]

Answer:

A) The mean of the​ chi-square distribution is 0

A) is not a property of chi square distribution.

Step-by-step explanation:

We have to find the properties of a chi square test.

A) False

The mean of a chi square distribution is equal to the degree of freedom.

B) True

The​ chi-square distribution is non symmetric.

C) True

The chi square value can be zero and positive.

It can never be negative because it is based on a sum of squared differences .

D) True

The​ chi-square distribution is different for each number of degrees of​ freedom.

When we are working with a single population variance, the degree of freedom is n - 1.

5 0
2 years ago
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