1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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).

You might be interested in
The graph of a line and an exponential can intersect twice, once or not at all. Describe the possible number of intersections fo
Katyanochek1 [597]

Answer:

  c) parabola and circle: 0, 1, 2, 3, 4 times

  d) parabola and hyperbola: 1, 2, 3 times

Step-by-step explanation:

c. A parabola can miss a circle, be tangent to it in 1 or 2 places, intersect it 2 places and be tangent at a 3rd, or intersect in 4 places.

__

d. A parabola must intersect a hyperbola in at least one place, but cannot intersect in more than 3 places. If the parabola is tangent to the hyperbola, the number of intersections will be 2.

If the parabola or the hyperbola are "off-axis", then the number of intersections may be 0 or 4 as well. Those cases seem to be excluded in this problem statement.

7 0
3 years ago
Consider 7 x 10 to the 3rd power write a pattern to find the value of the expression
Paraphin [41]

Answer:

7 x 10^3

Step-by-step explanation:

7 x 10 x 10 x 10


4 0
3 years ago
PLZZZZ HELP
Feliz [49]

Answer:

The measure of angle B is 54°. The measure of angle A is 51°. The measure of angle AFE is 47°.

According to exterior angle theorem: It a triangle

Exterior angle = Sum of opposite interior angles

In triangle BED,

The measure of angle B is 54°.

In triangle ABC,

The measure of angle A is 51°.

In triangle AEF,

Using angle sum property,

Therefore the measure of angle AFE is 47°.

4 0
3 years ago
Read 2 more answers
Deb deposited $70 in a savings account earning 10% interest, compounded annually.
bija089 [108]

Answer:

Deb will have $93.17 in 3 years

Step-by-step explanation:

FV = P(1 + r)^n

FV = 70(1+0.1)^3

FV = 70(1.331)

FV = 93.17

7 0
2 years ago
A person in the audience of a talk show has a 15% chance of winning free movie tickets. What is the chance that a person in the
Sergeu [11.5K]
-- The person in the audience will either win tickets or not win tickets.

-- The probability of (either win tickets or not win tickets) is 100%.

-- (Probability of win tickets) plus (probability of not win tickets) = 100%.

-- If (probability of win tickets) is 15%, then the (probability of not win tickets)
is the other 85%.
7 0
3 years ago
Read 2 more answers
Other questions:
  • The diameters of ball bearings are distributed normally. The mean diameter is 104 millimeters and the standard deviation is 3 mi
    11·1 answer
  • 24.94 I 29% of what number
    5·1 answer
  • What number would complete the pattern below? 107 98 90 83 77 __ 68 65 71 72 73 74 75?
    8·1 answer
  • The probability that a randomly-selected person at a show has seen the band play live before is 50%. A "superfan" is defined as
    10·1 answer
  • Hi! Can someone please help me?
    6·2 answers
  • I really need help !!! Will MARK BRAINLIEST!!!
    10·2 answers
  • 4. 15% of what number is 30?
    8·1 answer
  • Help please ten points I’ll mark brailiest
    14·1 answer
  • What is the range of the relation shown on the graph?
    7·1 answer
  • What are the new coordinates of L' if the following image has a dilation of 1/2?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!