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
steposvetlana [31]
3 years ago
11

PLEASE HELP WITH THIS

Mathematics
1 answer:
choli [55]3 years ago
3 0

Answer:

look at the equation carefully and solve it .

Step-by-step explanation:

You might be interested in
A manufacturer of flashlight batteries took a sample of 13 batteries from a day’s production and used them continuously until th
kogti [31]

Answer:

A:

Step-by-step explanation:

***I'm pretty sure A should read "NO, because the test value 1.257 is less than the critical value 1.782.  Please check the wording of the problem***

H0 : μ ≤ 400

Ha : μ > 400 (claim)

Sample mean: 6,155/13

Sample standard deviation: √44422.4359

Critical test value:   t > 1.782

t =  (6,155/13 - 400)/[(√44422.4359)/√13]   =   1.257    

    1.257 < 1.782  ;  we fail to reject the null hypothesis

There is not enough evidence at the 5% level of significance to support the claim that the mean  battery life is at least 400 hours.  

3 0
3 years ago
Stan's, Marks and Wayne's ages are consecutive whole numbers. Stan is the youngest, and Wayne is the oldest. The sum of their ag
Lisa [10]

Answer: Wayne is 35, Mark is 34, and Stan is 33.

33+34+35 = 102

4 0
3 years ago
If y varies inversely as x and y = 18 when x = 4, what is y when x = 24
Nady [450]
Well, you must first do your equation k=y/x so k= 18/4 or 9/2
now you use the equation y= kx or y= 9/2 times 24... 9/2 times 24 is 108 so y=108
3 0
3 years ago
What is the rate for 420 miles in 7 hours?
olga55 [171]
Normallly people want miles per hour or miles/hour
so divvided 420 by 7 =420/7=60/1=60 miles per hour
6 0
3 years ago
Read 2 more answers
In a week,13 hens laid 78 eggs. What is the unit rate for eggs per hen?
sergeinik [125]
78/13 convert to decimal 
6 eggs per hen per week
8 0
4 years ago
Read 2 more answers
Other questions:
  • Plz help...............
    5·1 answer
  • A group of hens laid the same number of eggs each day for a week. Kelly collected the eggs for six days. Write an expression to
    13·1 answer
  • Solve for x: 4/x+4/x2-9=3/x-3
    5·1 answer
  • There are 72 South American animals in the Springdale zoo. Thats is more than half the number of African animals in the zoo. Wri
    9·1 answer
  • Figure ABCD is a parallelogram.<br><br><br><br> What is the value of p?
    15·2 answers
  • The graph shows the function f(x).
    5·1 answer
  • What is half of 15? Please answer someone!
    11·2 answers
  • C
    9·1 answer
  • 2+2=....... easy points...
    11·2 answers
  • Y=5x - 3<br> 3x - 8y =24
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!