The quotient of a number and 8 is greater than 5

Which of the following best describes the change in the mean when 3 is included in the data set below? 34, 75, 26, 81, 65, 38, 4

kati45 [8]

Answer:

it increases

Step-by-step explanation:

5 0

3 years ago

There are 40 GT students going on a field trip. Each one pays their teacher $8.75 to cover admission to the museum and lunch. Ad

Norma-Jean [14]

Step-by-step explanation:

There are 40 DuBois students going on a field trip.

Each one pays their teacher $8.75 to cover admission to the museum and lunch.

Admission for the students is $120 and each one gets an equal amount to spend on lunch.

To Find :

How much will each DuBois student be able to spend on lunch.

Solution :

Amount they paid for admission :

\begin{gathered}P =\$ \dfrac{120}{40}\\\\P=\$3\end{gathered}P=$40120P=$3

Now, amount of money to spend on lunch is 8.75 -8.75−3 = $5.75 .

Hence, this is the required solution.

3 0

3 years ago

Suppose that 5% of the time Todd attends a concert twice a month, 40% of the time he attends a concert once a month, and 55% of

alexira [117]

it’s the right answer anyways hope u pass all your classes thanks bye now purrr 1245/4849

3 0

3 years ago

Select the list that correctly includes all of the coefficients from the problem

matrenka [14]

Answer:

( B.) 6, 1, -2 , -4

Step-by-step explanation:

A coefficient is a number multiplied by a variable. So, in this case let's take a look at the problem.

-2+6y+m-2y+8-4m

Now we have to find the numbers that have a variable next to it

which are 6,m,-2, and -4

(If you are wondering that why m is a coefficient its because it is also known as 1m)

Final answer = 6, 1, -2 , -4

Hope this helps!

7 0

2 years ago

8.36 Football and Brain Size: Randomization Test Exercise 8.35 describes a study examining hippocampus volume in the brain betwe

erma4kov [3.2K]

Answer:

Since the calculated F= 2.8657 does not lie in the critical region F (2,2)≥ 19 we conclude that there no difference between the means.

Since the calculated F= 205.0819 lies in the critical region F(1,2) ≥ 18.51 we conclude that there is a difference between the standard deviations of the three groups.

The F- statistic for the observed data is 0.101 as calculated by F- test in excel.

Step-by-step explanation:

To conduct an ANOVA randomization test we perform anova without replication in excel.

The data for the test is

Mean Standard Deviation Sample Size

Never

Played Football 7602.5 1074 25

FB with no History 6459.2 779.9 25

FB with Concussion 5734.6 593.4 25

Total 6598.8 1133.5 75

Anova: Two-Factor Without Replication

SUMMARY Count Sum Average Variance

Row 1 2 8676.5 4338.25 21310656.13

Row 2 2 7239.1 3619.55 16127224.25

Row 3 2 6328 3164 13215968.72

Column 1 3 19796.3 6598.766667 886871.7433

Column 2 3 2447.3 815.7666667 58708.90333

ANOVA Table

Source Sum of Degrees Mean

of Variation Square of freedom Squares

SS df MS F P-value

B/w Rows 1401945.703 2 700972.8517 2.8657 0.259

B/w Col 50164633.5 1 50164633.5 205.0819 0.00484

Error 489215.59 2 244607.795

Total 52055794.79 5

Set up the null and alternate hypotheses :

H0 ; there's no difference between the means and

there's no difference between the standard deviations

against the claim

Ha: there's a difference between the means and

there's a difference between the standard deviations

The significance level is chosen at 0.05

The test statistics to use are

F1= estimated variance from Between Means/ estimated variance from Error SS

F1= s1²/s3²

F1= estimated variance from Between Standard Deviations / estimated variance from Error SS

F2- s2²/s3²

with υ1= (2,2) and υ2(1,2) degrees of freedom.

The critical regions for F (2,2)≥ 19 for 0.05 significance level

and F(1,2) ≥ 18.51 for 0.05 significance level

Since the calculated F= 2.8657 does not lie in the critical region F (2,2)≥ 19 we conclude that there no difference between the means.

Since the calculated F= 205.0819 lies in the critical region F(1,2) ≥ 18.51 we conclude that there is a difference between the standard deviations of the three groups.

The F- statistic for the observed data is 0.101 as calculated by F- test in excel.

7 0

2 years ago