answer.
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
kipiarov [429]
1 year ago
14

In a​ survey, 39​% of the respondents stated that they talk to their pets on the telephone. A veterinarian believed this result

to be too​ high, so he randomly selected 200 pet owners and discovered that 73 of them spoke to their pet on the telephone. Does the veterinarian have a right to be​ skeptical? Use the alphaequals0.05 level of significance.
Mathematics
1 answer:
olganol [36]1 year ago
8 0

Answer:

Step-by-step explanation:

Hypotheses:

H_0: p=0.39\\H_a:p

(Left tailed test)

p = sample proportion

n = sample size = 200

Sample proportion = p = 73/200 = 0.365

Std error = 0.03404

p difference = 0.365-0.39 = 0.025

t = 0.025/se = 0.7344

df = 199

p value = 0.2317

Since p >0.05 accept null hypothesis

No,the veterinarian does not have a right to be​ skeptical because there is no statistical evidence to support his claim.

You might be interested in
a motor boat traveled 18 miles down a river in 2 hours but took 4.5 hours to return upstream. Find the rate of the motor boat in
tangare [24]

Answer:

  • rate of the boat in still water = 6.5 miles / hour

  • rate of the current = 2.5 miles / hour.

Explanation:

<u>1) Name the two variables:</u>

  • c: rate of the current
  • b: rate of the boat in still water:

With that, the net rates of the boat down the river and upstrean are:

  • down the river: b + c
  • upstream: b - c

<u>2) Now set the equations for the distance as a function of the times and the rates:</u>

  • distance = rate × time

  • downstream: 18 miles = (b + c) × 2 hours
  • upstream: 18 miles = (b - c) × 4.5 hours

<u>3) Set the system of equations:</u>

  • 18 = 2(b + c) ⇒ 9 = b + c . .  . Equation (1)
  • 18 = 4.5 (b - c) ⇒ 4 = b - c . . . Equation (2)

<u>4) Solve the system by </u><u>elimination</u><u>:</u>

  • Add equations (1) and (2): 9 + 4 = 2b
  • Divide both sides by 2: 13/2 = b
  • Simplify: b = 6.5

  • Replace b with 6.5 in equation (2) and solve:

       4 = 6.5 - c ⇒ c = 6.5 - 4 = 2.5

<u>5) Results:</u>

  • b = rate of the boat in still water = 6.5 miles / hour

  • c = rate of the current = 2.5 miles / hour.

   

3 0
2 years ago
Read 2 more answers
Korey starts a small carwash business to save up some cash. He decides to offer two different price packages to his clients. Pac
lubasha [3.4K]

Answer:

8$

Step-by-step explanation:

Because the first car wash does not cause the price to to down, but the ones after it do, you need onltake away 7 dollars of the price because it has only been discounted 7 times. Therefore 15-7=8 so 8 dollars is the answer.

6 0
2 years ago
Which graph shows the solution to the system of linear inequalities? x + 3y &gt; 6 y ≥ 2x + 4 PLEASE HELP
Andrei [34K]

Answer:

x + 3y > 6

Step-by-step explanation:

Find two points that satisfy x + 3y = 6 and draw a DASHED line through them.

It is greater than so shade the section ABOVE that line.

Using the intercept method, the two points I chose are: (0, 2) & (6, 0)

y ≥ 2x + 4

Find two points that satisfy y = 2x + 4 and draw a SOLID line through them.

It is greater than so shade the section ABOVE that line.

The two points I chose are: (0, 4) & (1, 6)

The solution is where the shaded sections overlap.

3 0
1 year ago
Read 2 more answers
Complete the steps to find all zeroes of the function f(x) = x4 − 4x3 − 4x2 + 36x − 45. This function has roots.
xxTIMURxx [149]
Steps?

A graph shows zeros to be ±3. Factoring those out leaves the quadratic
  (x-2)² +1
which has complex roots 2±i.

The function has roots -3, 3, 2-i, 2+i.

7 0
2 years ago
Read 2 more answers
Find the product of 0.094 ×0.367
Keith_Richards [23]
0.034498 is the answer
3 0
2 years ago
Other questions:
  • Arrange the following numbers in order from greatest to least 7,361; 7,136; 7,613
    13·2 answers
  • Each box of Fred’s Fudge is constructed from 2 triangles and 3 rectangles. What is the shape of each box?
    5·1 answer
  • Trey has money saved for a school trip. He earns an additional $40 moving lawns to add to his savings. Trey's parents give him e
    14·1 answer
  • Sara can run 49 yards in 7 seconds. At that rate, how many feet can she run in 3 minutes?
    8·2 answers
  • The graphs below have the same shape. What is the equation of the blue
    11·1 answer
  • If i = StartRoot negative 1 EndRoot, what is the value of i 3? –1 i 1 –i
    8·2 answers
  • An instructor at a major research university occasionally teaches summer session and notices that that there are often students
    6·1 answer
  • Prove that the diagonals of kite UVWX are
    11·2 answers
  • Work out the length of AB.<br> Give your answer to 3 significant figures.<br> A=(-1,6) B=(5,3)
    13·1 answer
  • The table represents some points on the graph of a linear function. Which equation represents the same relationship?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!