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
jarptica [38.1K]
3 years ago
13

1. Many Alpine ski centers base their calculations of revenues and profits on the belief that the average skier ski’s four times

a year with a population standard deviation of 2. To investigate this belief a random sample of 63 skiers was drawn and each participant was asked to report the number of times they skied last year. This yielded a mean of 4.84. Can we infer at the 10% significance level that the assumption of ski centers is wrong?
Mathematics
1 answer:
pshichka [43]3 years ago
6 0

Answer:

We cannot infer at the 10% significance level that the assumption of ski centers is wrong

Step-by-step explanation:

The null hypothesis for this question can be stated as  

Null hypothesis H0:  =4  

Alternate hypothesis Ha:  

The test is two tailed

Standard Deviation –  

 = 2

z=(4.84-4)/(2/sqrt(63))

=3.33

Z(0.1/2)=1.645 is less than Z =3.334

Hence, we will reject H0  

Hence, the average growth skier ski’s four times a year is not true  

You might be interested in
PLEASE HELP ME????( Brainlest) Please Show Work???
REY [17]

Step-by-step explanation:

again, 2 unknowns.

x = number of 2- points baskets

y = number of 3- points baskets

we know they hit the basket 37 times in a so far unknown mixture of 2-point and 3- point throws.

x + y = 37

which gives us e.g.

x = 37 - y

and we know that with this unknown mixture they scored 80 points.

so,

2x + 3y = 80

as every successful 2-points throw scores 2 points, and every successful 3-points throw scores 3 points.

so, again our 2 equations :

x = 37 - y

2x + 3y = 80

remember, we prepared the first equation so that it gives us already an identity expressing one variable by the other. and that we use in the second equation :

2×(37 - y) + 3y = 80

74 - 2y + 3y = 80

74 + y = 80

y = 6

and from

x = 37 - y

we get

x = 37 - 6 = 31

so, they had 31 2-points throws and 6 3-points throws.

3 0
2 years ago
What is 18 kg. x 153.56 kg.
Zielflug [23.3K]
<span>2764.08  You can plug this in on a calculator or solve by hand.</span>
4 0
3 years ago
Read 2 more answers
Does a negative divided by a negative make a positive
saveliy_v [14]

yes, negative divided by a negative is positive

a negative multiplied by a negative is also positive

8 0
3 years ago
Read 2 more answers
How did you compute sums of dollar amounts that were not whole numbers? For example, how did you compute the sum of$5.89 and$1.4
nignag [31]

Answer:

$7.34

Step-by-step explanation:

To compute sum of dollars that are not whole numbers. Using the sum of$5.89 and$1.45 as an illustration :

$5.89 + $1.45

Taking the whole numbers first:

$5 + $1 = $6

Take the sum of the decimals :

$0.89 + $0.45 = $1.34

Sum initial whole + whole of sum of decimal

$6 + $1 = $7

Remaining decimal : $1.34 - $1 = $0.34

$7 + $0.34 = $7.34

4 0
3 years ago
Read 2 more answers
The figure below shows a line graph and two shaded triangles that are similar:
VLD [36.1K]
Every time the y-value decreases by 1, the x-value increases by 2, so the slope is -1/2 throughout the line.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Divide x^4+3x^3-2x^2+4 by x-2<br><br>which answer shows the correct synthetic division and quotient
    6·1 answer
  • Which of the following expressions represents "twelve diminished by six times a number"?
    12·2 answers
  • PLEASE HELP I DON'T UNDERSTAND
    6·2 answers
  • john is n years old. kim is three years younger than john. vanessa is half kim's age. write an expression for each persons age.
    11·1 answer
  • Given the two figures are similar, calculate the value of v
    6·1 answer
  • What is the distance, to the nearest hundredth, from (6, 5) to (-3, -8)?
    8·2 answers
  • What is tue equation of the function represented by this table of values x -2-1 0 1 2 y 3/26 3/5 3 15 76
    15·1 answer
  • I’m not sure how to solve this. help?
    13·1 answer
  • What is this answer?​
    15·1 answer
  • When a force is applied to an object its, ________, the object may ____________________.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!