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allsm [11]
2 years ago
9

Neck size, in inches, and number of teeth of 18 randomly selected puppies are compared. Which significance test should be used t

o see if neck size and number of teeth have a linear relationship? Assume all test conditions are met.
a
Two-sample z-test

b
Two-sample t-test

c
Two-proportion z-test

d
t-test for slope of regression line

e
One-proportion z-test
Mathematics
1 answer:
Masteriza [31]2 years ago
4 0

Answer:

D

Step-by-step explanation:

its just obvious

go bucs

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Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally
storchak [24]

Answer:

a) 0.1587

b) 0.0475

c) 0.7938

Step-by-step explanation:

Let's start defining our random variable.

X : ''Thickness (in mm) of ancient prehistoric Native American pot shards discovered in a Hopi village''

X is modeled as a normal random variable.

X ~ N(μ,σ)

Where μ is the mean and σ is the standard deviation.

To calculate all the probabilities, we are going to normalize the random variable X.

We are going to call to the standard normal distribution ''Z''.

[(X - μ) / σ] ≅ Z

We normalize by subtracting the mean to X and then dividing by standard deviation.

We can find the values of probabilities for Z in a standard normal distribution table.

We are going to call Φ(A) to the normal standard cumulative distribution evaluated in a value ''A''

a)

P(X

P(ZΦ(-1) = 0.1587

b)

P(X>7)=P(\frac{X-4.5}{1.5}>\frac{7-4.5}{1.5})

P(Z>1.666)=1-P(Z\leq 1.666)=

1 - Φ(1.666) = 1 - 0.9525 = 0.0475

c)

P(3

P(-1 Φ(1.666) - Φ(-1) = 0.9525 - 0.1587 = 0.7938

8 0
3 years ago
Is 12/35 less than 3/5
stepan [7]

Answer:

yes

Step-by-step explanation:

3/5 is closer to being a full number =D

7 0
2 years ago
An airplane flies with a constant speed of 660 miles per hour. How far can it travel in 2 hours
bearhunter [10]

Answer:

1320 miles

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
67.1 minus 38.29 = <br> A. -105.39 <br> B. 28.81 <br> C. -28.81 <br> D. -44.352
zalisa [80]
67,1 - 38,29 = 28,81

B

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3 years ago
In figure below points T,R,X,Y and Z
kirill [66]

Answer:

a

Step-by-step explanation:

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