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3 years ago

I do not understand this question I am confused!

Mathematics

2 answers:

kati45 [8]3 years ago

6 0

H is the answer. This is because if you fold 3 in half it won't be equal.

schepotkina [342]3 years ago

5 0

H because if you fold the parallelogram in half then it won't fold in line whereas in all the other shapes they fold right on top of each other

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A sample of 300 FM residents was taken and 135 said their favorite season was summer. Calculate a 99% confidence interval for th

erma4kov [3.2K]

Answer:

The 99% confidence interval for the proportion of FM residents whose favorite season is summer is between (0.376, 0.524).

The lower bound of this interval is 0.376.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 300, \pi = \frac{135}{300} = 0.45$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 - 2.575\sqrt{\frac{0.45*0.55}{300}} = 0.376$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 + 2.575\sqrt{\frac{0.45*0.55}{300}} = 0.524$

The 99% confidence interval for the proportion of FM residents whose favorite season is summer is between (0.376, 0.524).

The lower bound of this interval is 0.376.

3 0

3 years ago

Read 2 more answers

I need helppp please does anyone know this?

Step2247 [10]

Answer:

560m³

Step-by-step explanation:

Cuboid : length = 16, width = 5, height = 4

Prism : base = 16, perpendicular height = 6, height = 5

V = volume cuboid + volume prism

V = 16 x 5 x 4 + (16 x 6 : 2 x 5) = 560m³

3 0

3 years ago

I need helppppppp plssss

Svet_ta [14]

9x +4 = 3x+16

6x=12 X=2........

6 0

3 years ago

Matt tossed a coin 30 times. The results were 12 heads and 18 tails. What is the experimental probability of tossing heads?

ahrayia [7]

Answer:

25%

Step-by-step explanation:

You can't determine what it is going to land on but this is the answer!

Ps.Im not completely sure no hate please :)

4 0

2 years ago

The base of a rectangular prism has an area of 13 2/3, and the height of the prism is 8 5/6. What is the volume of the prism? Be

Fed [463]

Answer:

120 $\frac{13}{18}$

Step-by-step explanation:

The formula for finding the volume of a prism is:

V = Bh

You have to convert 13 $\frac{2}{3}$ into an improper fraction, like so:

$\frac{41}{3}$

Convert the other:

$\frac{53}{6}$

Multiply:

$\frac{41}{3}$ · $\frac{53}{6}$ = $\frac{2173}{18}$

Convert to mixed fraction:

120 $\frac{13}{18}$

6 0

2 years ago