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vekshin1
2 years ago
11

Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfu

lness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher plans to do a single-sample t-test after the data are collected. What is the null hypothesis for this test? Question 12 options: The group trained in mindfulness will spend less time eating than the general population The group trained in mindfulness will not spend less time eating than the general population The group trained in mindfulness will spend either more or less time eating than the general population The group trained in mindfulness will spend more time eating than the general population
Mathematics
1 answer:
sineoko [7]2 years ago
5 0

Answer:

Step-by-step explanation:

The null hypothesis is the starting point. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). This is the starting point point which we presume to be true. Therefore, the null hypothesis for this test would be:

The group trained in mindfulness will spend more time eating than the general population.

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In ΔGHI, the measure of ∠I=90°, IG = 6.8 feet, and HI = 2.6 feet. Find the measure of ∠G to the nearest degree.
Luda [366]

Answer:

\angle G=20.8\approx 21^{\circ}

Step-by-step explanation:

Given: In ΔGHI, \angle I=90°, IG = 6.8 feet, and HI = 2.6 feet

To find: \angle G

Solution:

Trigonometry defines relationship between the sides and angles of the triangle.

For any angle \theta,

tan\theta = side opposite to \theta/side adjacent to \theta

In ΔGHI,

tan G=\frac{HI}{GI}

Put HI=2.6  \,\,feet\,,\,GI=6.8\,\,feet

So,

tan G=\frac{2.6}{6.8}=0.38

Therefore, \angle G=20.8\approx 21^{\circ}

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2 years ago
10 POINTS!<br><br> Perform the indicated operation: 2 3/4 - 1/3 =
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Suppose that we want to investigate whether curfews correlate with differences in grades for students in middle school. We selec
Anton [14]

Answer:

Step-by-step explanation:

Hello!

Given the variables

X: Curfew of middle school students (Categorized Yes/No)

Y: Average grade of middle school students. (Categorized: A, B, C, and D)

The objective is to test if there is an association between both variables, you have to conduct a Chi-Square test of independence.

In the null hypothesis, you state that both variables are independent vs. the alternative hypothesis that the variables are dependent.

The hypotheses for this test are:

H₀: Pij= Pi. * P.j i= (1)Yes, (2)No; j= (1)A, (2)B, (3)C, (4)D

H₁: Te variables are not independent.

α: 0.05

X^2= sum\frac{(O_{ij}-E_{ij})^2}{E_{ij}} ~~X_{(r-1)*(c-1)}

Where

Oij is the observed frequency for the i-row and j-column

Eij is the expected frequency for the i-row and j-column

r= number of categories in the rows

c= number of categories in the columns

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p-value: 0.687

The p-value is greater than the significance level, so the decision is to not reject the null hypothesis. So using a 5% significance level, you can conclude that having a curfew and the average grades of middle schoolers are two independent variables.

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2 years ago
Tammy has planted a small, young tree in her yard. To allow for the tree’s growth, she needs 15 feet in all directions around th
astraxan [27]

Answer:

First, remember that a circle of radius R centered in the point (a, b) can be written as:

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Suppose that we can model the yard as a rectangular coordinate axis.

And the tree is planted in the point (a, b)

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Shkiper50 [21]

Answer:

step 3: place the tip of the compass at point x and strike the arc at point y

Step-by-step explanation:

congruent triangles are triangles that have equal shape and size. They are the same in every way. this is the reason why they are called CONGRUENT

we have been asked to construct an angle MNT congruent to angle PQR. this means we are to construct angle that is the same as that at PQR.

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