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
jok3333 [9.3K]
3 years ago
11

I need a answer. Stat

Mathematics
1 answer:
lara [203]3 years ago
7 0
2x-6y=12
table...
x. y.
0. -2
1. -7/3
2. -4/3
6. 0

plot the 4 points and connect using straight edge
You might be interested in
Historically, these bolts have an average thickness of 10.1 mm. A recent random sample of 10 bolts yielded these thicknesses:
Akimi4 [234]

Answer:

a) Sample mean = 9.99

Sample standard deviation = 0.3348

b) -1.0389

c) 0.1631

Step-by-step explanation:

We are given the following in the question:

9.7, 9.9, 10.3, 10.1, 10.5, 9.4, 9.9, 10.1, 9.7, 10.3

a) sample mean and standard deviation

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{99.9}{10} = 9.99

Sum of squares of differences = 1.009

S.D = \sqrt{\dfrac{1.009}{9}} = 0.3348

b) observed value of the t-statistic

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{9.99 - 10.1}{\frac{0.3348}{\sqrt{10}} } = -1.0389

c) probability of these statistics (or worse) if the true mean were 10.1 mm

Degree of freedom =  n - 1 = 9

Calculating the value from the table

P(x < 9.99) = 0.1631

0.1631 is the the probability of these statistics (or worse) if the true mean were 10.1 mm

8 0
3 years ago
A. Witch subject did the most students choose
GarryVolchara [31]
A:science b: social studies, math, other, english, and science
7 0
3 years ago
Read 2 more answers
PLS HELP ILL GIVE U POINTS :)
denpristay [2]

Answer:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Select the fraction that is NOT in lowest terms . which of these fractions is not in lowest term?
Kisachek [45]

Answer:

14/21

Step-by-step explanation:

14/21 is divisible by 7, and can reduce to 2/3

6 0
2 years ago
In Brownsville Texas it is 80°F the temperature is expected to drop 1.5° each hour in Mesquite Texas is 94°F and the temperature
denis-greek [22]

Answer:

28 hours

Step-by-step explanation:

let the time period at which the temperature be equal in both Brownsville and Mesquite Texas be 'x'.

Given,

In Brownsville Texas, the temperature is expected to drop 1.5° each hour and In Mesquite Texas, the temperature is expected to drop 2° each hour.

Now, according to the question,

after 'x' hours,

⇒ 80° - 1.5°(x) = 94° - 2°(x)

⇒ 0.5°(x) = 14°

⇒ x = 28

Hence, Till 28 more hours the temperature in Mesquite Texas be greater than that in Brownsville.

3 0
3 years ago
Other questions:
  • Joe borrowed $900 from Sam for six months. How much will Sam earn if he charges Joe a simple interest rate of 4 percent?
    8·2 answers
  • Melissa bought 42 pine seedlings and 30 juniper seedlings
    7·1 answer
  • In square ABCD, there are shaded regions bounded by arcs of circles with centers at A,B,C and D. Determine the area of the white
    6·1 answer
  • A homeowner is asking for council permission to remove a tree. To determine its height ( m), the council arborist (1.8m tall) me
    6·1 answer
  • A calculator screen shows a number in scientific notation as 1.04E10. Write this number in standard form.
    5·1 answer
  • The surface area of a cylinder
    14·1 answer
  • Help please. A math lib question about quadratic equations
    6·1 answer
  • Which of the following is a true statement about the angles in the
    8·1 answer
  • 1. What value of x makes the equation 3x - 6 = 9 true?
    6·2 answers
  • Lucy deposited $2500 into an account that earns 3% compound interest. How much interest will Lucy earn after 5 years?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!