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Ira Lisetskai [31]
3 years ago
14

The value of 2 in 204.75 is how many times greater than the 2 in 103.52

Mathematics
1 answer:
Mariana [72]3 years ago
7 0
The value is 200. It is 4 times greater
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At a certain restaurant, the distribution of wait times between ordering a meal and receiving the meal has mean 11.4 minutes and
netineya [11]

Answer:

C

Step-by-step explanation:

6 0
2 years ago
In a study of parents' perceptions of their children's size, researchers asked parents to estimate their youngest child's height
tatyana61 [14]

Answer:

Test statistic t=6.505

P-value=0

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that parents tend to underestimate their youngest child's size.

Then, the null and alternative hypothesis are:

H_0: \mu=0\\\\H_a:\mu> 0

The significance level is assumed to be 0.05.

The sample has a size n=39.

The sample mean is M=7.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.2.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7.2}{\sqrt{39}}=1.153

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{7.5-0}{1.153}=\dfrac{7.5}{1.153}=6.505

The degrees of freedom for this sample size are:

df=n-1=39-1=38

This test is a right-tailed test, with 38 degrees of freedom and t=6.505, so the P-value for this test is calculated as (using a t-table):

P-value=P(t>6.505)=0

As the P-value (0) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is  enough evidence to support the claim that parents tend to underestimate their youngest child's size.

5 0
3 years ago
If h(x) = 3 + 2f(x) , where f(1) = 3 and f '(1) = 4, find h'(1).
Leviafan [203]
H'(x) = 2f'(x)

h'(1) = 2*f'(1) = 2*4
h'(1) = 8
3 0
3 years ago
Write x^5 in expanded form​
svetoff [14.1K]

Hi,

x^5 = x * x * x * x * x.

5 0
3 years ago
Can someone explain how these equal 5 and -5 please
uysha [10]
I'm not sure how you obtained -5 as your answer but this is the mathematical explanation. hope this helps!
{x}^{2}  + 3x = 40 \\  {x}^{2}  + 3x - 40 = 0 \\(x + 8)(x - 5) = 0 \\ x =  - 8 \\ x = 5
6 0
3 years ago
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