help pls help help help

Please help me?
8 + 12 ÷ ( 4 - 2 )​

According to the Centers for Disease Control and Prevention (February 18, 2016), 1 in 3 American adults don’t get enough sleep. A researcher wants to determine if Americans are sleeping less than the recommended 7 hours of sleep on weekdays. He takes a random sample of 150 Americans and computes the average sleep time of 6.7 hours on weekdays. Assume that the population is normally distributed with a known standard deviation of 2.1 hours. Test the researcher’s claim at α = 0.01
a. Select the relevant null and the alternative hypotheses.
A. H0: μ = 7; HA: μ ≠ 7
B. H0: μ ≤ 7; HA: μ ≥ 7
C. H0: μ ≥ 7; HA: μ < 7
b. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)
Test statistic = ?
c. Find the p-value
A. p-value < 0.01
B. 0.01 ≤ p-value < 0.025
C. 0.025 ≤ p-value < 0.05
D. 0.05 ≤ p-value < 0.10
E. p-value ≥ 0.10
d. What is the conclusion at α = 0.01?
A. Reject H0 since the p-value is greater than α.
B. Reject H0 since the p-value is smaller than α.
C. Do not reject H0 since the p-value is greater than α.
D. Do not reject H0 since the p-value is smaller than α.
e. Make an inference.
A. There is insufficient evidence to suggest that Americans sleep less than the recommended 7 hours of sleep.
B. There is sufficient evidence to suggest that Americans sleep less than the recommended 7 hours of sleep.

100 + (-75) =?
I’m desperate please

For every 1/4 mi Pascal walks Lucien runs 2/3 mi. How many miles does Pascal walk for every 1 mi Lucien runs? Write your answers in the blanks.

FIRST TO ANSWER GETS A FULL POINTS

PLEASE ANSWER AND GIVE A BRIEF (short) EXPLANATION

each triangle is equilateral. is the relationship between the perimeter and the side length of the equilateral triangles proportional? explain

Please answer these four questions pleaseeeee

A grain silo is shaped like a cylinder. The height of the silo is 60 feet tall, and the circumference of

the base is a 20 feet. Which measurement is closest to the volume of the silo in cubic feet?

F 3,769.9 ft?

G 75,398.2 ft3

H 226,194.7 ft

J 18,849.6 ft3

12w=-8(-4w=10) please help

1. The Lincoln Middle School football team needs to raise at least $1,225 for new uniforms. They sell tickets for a school dance for $2 each, but they have to pay the DJ $500 students. Create an inequality that the football team can use to see how many tickets they must sell to reach their goal.

please help im hungry but I cant eat until I finish this
Isabella has $15.57 to buy strawberries at the store. Each pint of strawberries costs $2.35. How many full pints of strawberries can Isabella buy?

A baseball player had 4 hits in 8 games At this rate how many hits will the baseball player have in the next 28 games?
O 14
O 24
O 28
O 56​

Evaluate. 48-2^4x2.................

A store sells juice in different sizes. Determine which size is the best buy and the unit price.

8 oz $2.40
24 oz $6.48
64 oz $14.08

​

Julie Ann works on an assembly line building computers. She can assemble 8 units an hour. Write an expression for the number of units she can produce in h hours. Question 2 options: h ÷ 8 h - 8 8 + h 8h

Anyone please help me with last two I'll vote brainliest!! :))

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Five marbles are drawn from the bag.

What is the approximate probability that exactly two of the five are blue?

1%
4%
36%
40%

Dr Eberhardt has been conducting a study in which he wants to know how much glucose is generated by blue-green algae when they are placed under blue light for 4 hours. There are two methods that he can used to determine glucose levels and he needs to know which one is more accurate. In method 1, a hexokinase activity assay is used and the mean of 10 algal samples is 120 mmol, with a standard deviation of 4.8 In method 2, a glucose oxidase activity assay is used and the mean of the same 10 algal samples is 100 mmol, the standard deviation is 4.

Which method is more accurate?

a. both are equally accurate based on their coefficients of variation
b. method 2, because it has a smaller standard deviation
c. method 1, because although the standard deviation is greater so is the mean
d. you would need to know the range in order to see which is more accurate

Graph the line that contains the point (-2,-4) and has a slope of
1/4

Last year, Lucy opened an investment account with $8800. At the end of the year, the amount in the account had Increased by 28.5% How much is this increase in dollars?

Which of the following is an Equivalent Fraction to: 3/8

Solve 4x – 2(x + 1) = 3x + 10
Ox= -12
Ox=12
Ox= -8
Ox=8
HELP ASAP

Raquel kicks a football. The height in feet can
be modeled by the equation
h(x) = -16x2 + 64x.
How long in seconds before the ball reaches
its maximum height? Show work.
What is the maximum height of the ball? Show work.

answer fast please

The product of two positive consecutive integers is 462. Find the integers.

What is 3085 over 16 as a mixed number? Ahh helpppp:(!

Write as an equation.
Your test score is 50 divided by the sum of 8 and 60.
O 50/x = 8 + 60
O 50 = 8/60
50x = 8 + 60
O X = 50/(8 +60)

Help me please I need to find the equation

Find the mean, median, and mode of the following data:
(round to 1 decimal place as needed)
35, 17, 23, 28, 17, 27, 30, 17, 27, 18

Solve for x. 3 (2x + 7) = 15 (x - 4)

A bicycle is originally priced at $80. The store owner gives a discount and the bicycle is now priced at $60. What is the percent of discount for the cost of the bicycle?

What is 6 + 4(11 - 2) divided by 3^2
USE PENDAS
and show step by step of how you got to your answer
Will give BRAINLEST though only if the work you showed is correct AND the answer.