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mrs_skeptik [129]
3 years ago
5

A sample of 40 people owned an average of 1.35 hats. It is known from a previous study that the population standard deviation of

hat ownership is 0.63 hats. Construct a 95% confidence interval.
Mathematics
1 answer:
FrozenT [24]3 years ago
3 0

Answer:

(1,155, 1.545).

Step-by-step explanation:

From Normal distribution tables the z score for 95% CI  = 1.96.

Confidence Interval

= 1.35 +/- 1.96 * 0.63/√40

=  1.35 +/- 0.195

=  (1,155, 1.545).

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Find the equation in slope-intercept form that describes a line through (2, 4) with slope 0
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3 years ago
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3 0
4 years ago
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I need helpppppp i have no idea what im looking at lol
Fed [463]

The correct answer is option B which is  Cot\theta=\dfrac{24}{7}.

<h3>What is trigonometry?</h3>

Trigonometry is the branch of mathematics which set up a relationship between the sides and angle of the right-angle triangles.

Given that:-

Sec\theta=\dfrac{25}{24}

The value of cot theta will be calculated as:-

We know that sec theta is the ratio of hypotenuse and base and cot theta is the ratio of base and perpendicular so we will find the value of perpendicular by applying the Pythagorean theorem.

H² = P²  +  B²
P² = H²  -  B²

P²  =  25²  -  24 ²  = 49

P  = √49 =  7

Now the value of cot theta will be calculated as:-

Cot\theta =\dfrac{B}{P}=\dfrac{24}{7}

Therefore the correct answer is option B which is  Cot\theta=\dfrac{24}{7}.

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2 years ago
Use the drop-down menus to complete each equation so the statement about its solution is true.
zalisa [80]

Answer:

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Step-by-step explanation:

2x+5+2x+3x

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3 years ago
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