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
Sveta_85 [38]
3 years ago
9

Gus needs to complete at least 90 minutes of reading over the next 7 days. He has already completed 10 minutes. If m represents

the additional minutes each day, what symbol would complete the inequality: 7m + 10 ___ 90
Mathematics
1 answer:
Anna35 [415]3 years ago
4 0
≥ just put that there
You might be interested in
DOES ANYONE KNOW THANSER TO QUESTION 5
noname [10]

Answer:

B) SAS i think

3 0
1 year ago
A sample of 100 workers located in Atlanta has an average daily work time of 6.5 hours with a standard deviation of 0.5 hours. A
Readme [11.4K]

Answer:

t=\frac{6.5-6.7}{\sqrt{\frac{0.5^2}{100}+\frac{0.7^2}{110}}}}=-2.398  

df = n_1 +n_2 -2= 100+110-2= 208

Since is a bilateral test the p value would be:

p_v =2*P(t_{208}

Comparing the p value with the significance level given \alpha=0.05 we see that p_v so we can conclude that we can reject the null hypothesis, and we have significant differences between the two groups at 5% of significance.

Step-by-step explanation:

Data given and notation

\bar X_{1}=6.5 represent the sample mean for Atlanta

\bar X_{2}=6.7 represent the sample mean for Chicago

s_{1}=0.5 represent the sample deviation for Atlanta

s_{2}=0.7 represent the sample standard deviation for Chicago

n_{1}=100 sample size for the group Atlanta

n_{2}=110 sample size for the group Chicago

t would represent the statistic (variable of interest)

\alpha=0.01 significance level provided

Develop the null and alternative hypotheses for this study?

We need to conduct a hypothesis in order to check if the meanfor atlanta is different from the mean of Chicago, the system of hypothesis would be:

Null hypothesis:\mu_{1}=\mu_{2}

Alternative hypothesis:\mu_{1} \neq \mu_{2}

Since we don't know the population deviations for each group, for this case is better apply a t test to compare means, and the statistic is given by:

t=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

Calculate the value of the test statistic for this hypothesis testing.

Since we have all the values we can replace in formula (1) like this:

t=\frac{6.5-6.7}{\sqrt{\frac{0.5^2}{100}+\frac{0.7^2}{110}}}}=-2.398  

What is the p-value for this hypothesis test?

The degrees of freedom are given by:

df = n_1 +n_2 -2= 100+110-2= 208

Since is a bilateral test the p value would be:

p_v =2*P(t_{208}

Based on the p-value, what is your conclusion?

Comparing the p value with the significance level given \alpha=0.05 we see that p_v so we can conclude that we can reject the null hypothesis, and we have significant differences between the two groups at 5% of significance.

3 0
3 years ago
Read 2 more answers
Doesn't anyone know the answer
Nadusha1986 [10]

Answer:

d.66

have a good day

3 0
3 years ago
What is the inverse of the function f(x) = 2x + 1?
Alexandra [31]

Answer:

f^{-1}(x) = \frac{x-1}{2}

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 2x + 1 ( subtract 1 from both sides )

y - 1 = 2 ( divide both sides by 2 )

\frac{y-1}{2} = x

Change y back into terms of x and let x = f^{-1} (x), thus

f^{-1}(x ) = \frac{x-1}{2}

6 0
3 years ago
What is the x-intercept of the line 6x−3y=24 ?
MAVERICK [17]

Answer:

what line are you talking about

5 0
2 years ago
Other questions:
  • What is<br> What is the measure of angle B?<br> A. 30°<br> C. 35°
    14·1 answer
  • Abc is equilateral with AB=3x-2,BC=2x+4, and CA= x+10
    12·1 answer
  • Write the equation of the line that contains the points (2,-5) and (1,4).
    8·1 answer
  • Which is the graph of the system y &lt; 3x + 4 and y &lt; 3x - 2
    8·2 answers
  • What equation could be used to find how many grams of mass is in 15.6 kilograms
    13·1 answer
  • How do I solve these trigonometric equations!!?
    5·1 answer
  • A bottle of orange juice has 750 mg of vitamin C and has 6 servings. A bottle of cranberry juice contains 135 mg of vitamin C an
    9·1 answer
  • Find the sum.<br> 7x + 15x =
    5·2 answers
  • Josh bought 2 pairs of jeans for $25.60 each and some shirts for $15.30 each. If he spent a total of $112.40,
    14·1 answer
  • A window shaped like a parallelogram has an area of 44
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!