At a busy street corner in a large city, right at the morning rush hour, a psychologist counted the number of people waiting for the light to change. A confederate dressed as a homeless man crossed the street against the light. The psychologist counted the number of people who followed him. Whern the next group collected to wait for the light to change, another confederate, dressed as a well-to-do businessman, crossed the street against the light, and the psychologist counted the number of people who followed him. Analyze the data, X2, Write the conclusions and answer the question below Followed Did Not Follow Homeless Man 3 15 Businessman 8 7 What can the psychologist say about the influence of appearance on whether or not a person takes risks?

Interpretation: At level of significance a = 0.05, the evidence is sufficient. A person's risk-taking behavior is influenced by their appearance.

Using a statistical test, researchers compare the evidence supporting the null and alternative hypotheses, which are two conflicting claims: There is no population impact, or null hypothesis (H0). There is a population effect, or alternative hypothesis (Ha or H1).

Here,

Procedure for the Mega Stat Excel add-in:

The first step is to choose Add-Ins > Mega Stat > Chi-square/Crosstab > Contingency Table in EXCEL.

Step 2: Select the cell range A1:C3 in the input range box.

Step 3. Pick chi-square under Output Options. Click OK in Step 4.

Mega Stat output from the Excel add-in

Test for Independence Using a Chi-Square Contingency Table

Total Number of Followed Did Not Follow

Homeless Man 3 15  18

Businessman 8   7   15

Total       11  22  33

4.95 chi-square

1 df

.0261 p-value

Consequently, the p-value is 0.0261.

Decide on a significance threshold of 0.05.

The p-value in this instance, which is lower than the value of a = 0.05, is 0.0261. In other words, the p-value was (=0.0261) (=0.05).

Reject the null hypothesis in light of the rejection rule. [tex]H_{0}[/tex]

Interpretation: At level of significance a = 0.05, the evidence is sufficient. A person's risk-taking behavior is influenced by their appearance.

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at time t, the position of a body moving along the s-axis is s=t^3 - 12t^2 + 36t m. Find the total distance traveled by the body from t=0 to t=3.

Find the measures of the numbered angles in each kite.

What is the volume of the prism, in cubic centimeters?

Question 2 of 3 Which expressions can be added to find the volume of the solid figure? Select all that apply. A solid shape is made up of 2 attached rectangular prisms. First rectangular prism has a length of 3 m, height of 1 m, and width of 4 m. Second rectangular has a length of 3 m, height of 7 m, and width of 4 m. The total length of the shape is 6 meters. A. 4 × 3 × 7 and 1 × 3 × 4 B. 4 × 6 × 7 and 1 × 3 × 3 C. 1 × 4 × 7 and 4 × 3 × 6 D. 4 × 6 × 1 and 6 × 4 × 3 E. 4 × 6 × 3 and 7 × 3 × 3

I need help with my math assignment please

An ant population began with 30 ants. From this point, the population
continuously increased by 4% each hour. Based on this model, how many
hours will it take the population to reach 100 ants?

Hey can you help me with my math assignment

An airplane takes off at a speed S of 226 mph at an angle of 18° with the horizontal. Resolve the vector S into components.

Please answer soon
(2x+5)37 what is x

Please solve this problem.

Btw I don’t need an explanation I just need an answer

Jayden is filling his 290 gallon pool with a garden hose. The garden hose produces 29 gallons of water per hour. How long will it take for Jayden to fill up his pool?

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Simplify the expression. 9√3(8√3+9√5)

The number N of bacteria present in a culture at time t (in hours) obeys the equation N = 1000e^0.01t After how many hours will the population equal 1500? 2000?​

Can someone help me please!

<2 and <4 are corresponding angles
m<4 = 17x° and m<2 = (9x+40)º
Find x and the measure of each angle.

If y = 2/3x^2– 5x, what is the
value of x = 6
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Kianna started her homework at 4:30 pm. She finished at 5:05 pm. How many SECONDS did it take her to finish her homework? *
1 point

A rectangular prism has a volume of 72 cubic units. How many unit cubes will fill the rectangular prism exactly?

a.12 unit cubes

b.36 unit cubes

c.24 unit cubes

d.72 unit cubes

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Identify the constants in the expression: 7-5x+1?For 6th grade.

1. Sam rolls a fair dice and flips a fair
coin. What is the probability of
obtaining an odd number and a head?
Use a sample space diagram to help.
See below for an example.

PLEASE HELP!!!
Multiple Choice: which of the following expressions is not an equivalent
expression to the others?
A. 8(x-2) + 40
B. 8x - 3
C. 8(x + 3)
D. 40 + 8x – 16

16
Which one of the following
sets of three lengths will form
a triangle
A. 3, 4, and a
B. 3, 5, and a
C. 3, 6, and a
D. 3, 7, and a

The sum of x and y is 280. If x + 8 is y, when will the value of x be the same for both equations?

-29= x + 8
what is x

wiil give crown if right Winston bought an encyclopedia priced at $42. Shipping and handling cost anadditional 30% of the price. What was the total cost of the encyclopedia, in cluding shipping and handling?

125% of ___ is 25

what is the blank

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PLEASE IM REALLY BAD AT THESE QUICK!!!!!!!!!!!!!

Scenario: Relay Track Teams
Instructions:
View the video found on page 1 of this journal activity.
Using the information provided in the video, answer the questions below.
Show your work for all calculations.
Three teams are racing in the district meet. Below are the box plots representing the race times for each team. Analyze the data and decide who you think will win.

The Racers' Conjectures
1. Complete the table below to describe why each team member thinks his team will win the district meet. (1 point)
Team
Reason
Red





Yellow





Blue






2. Looking at the box plots, do you agree or disagree with each team's conjecture? Explain your reasoning. (3 points: 1 point for each row of the chart)
Team
Yes or no
Reason
Red










Yellow










Blue











Analyzing the Data
3. Use the box plots to complete the five-number summary chart. (3 points: 1 point for each row of the chart)


Minimum
Lower quartile
Median
Upper quartile
Maximum
Red










Yellow










Blue











4. Look at the box plots and decide whether each team's distribution is symmetric or skewed. Circle your answers. (1 point)
Red
Negatively skewed
Symmetric
Positively skewed
Yellow
Negatively skewed
Symmetric
Positively skewed
Blue
Negatively skewed
Symmetric
Positively skewed

Below are the actual race times, in seconds, for each team. They are listed in numerical order, not in the chronological order of actual races.


Race 1
Race 2
Race 3
Race 4
Race 5
Race 6
Race 7
Race 8
Race 9
Red
47.5
42
48.5
44.5
47
41
48
43
49
Yellow
47.5
45.5
48.5
46.5
47
45
48
46
49
Blue
48.1
46.8
52
47.9
48
46
50
47
53

5. Use the race times to calculate the mean time for each team. Show your work. (3 points: 1 point for each team)
Red




Yellow




Blue





6. How do the three teams rank based on mean times? List them in order from fastest to slowest, and explain your ranking. (1 point)






7. How do the three teams rank based on median times? Explain your ranking. (1 point)








8. What statistic should you use if you wish to compare the spreads? Explain your reasoning. (1 point)




9. The interquartile range for the red team's race times is 5 seconds. Find the IQR for the yellow and blue teams. (2 point)




10. What do the interquartile ranges (IQRs) tell you about how the teams race? Explain your thinking. (1 points)








Making a Decision
11. Now that you've analyzed the data, it's time to make a decision. Who do you think will win the district meet? Describe how you think each team will do, and explain your reasoning. (3 points)
Red:






Yellow:






Blue: