Twelve different video games showing substance use were observed and the duration of times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the sample data to construct a 98% confidence interval estimate of sigma, the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution.4,757 4,509 4,221 4,486 4,935
4,426 4,905 4,822 4,383 4,956
5,043 4,038

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

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Please help me with my math!!!!!!!!!
Help my please thanks
Brandon wants to use the Distributive Property to figure this problem out. What should be his next step?Brandon's step so far: 8 × (10 + 7)(8 × 10) + (8 × 7)(8 + 10) × (8 + 7)(8 × 10) + 710 + (8 × 7)

The multiplicative inverse of – 1 in the set {-1,1}is

Answers

Answer: The multiplicative inverse of – 1 in the set {-1,1} is -1.

Step-by-step explanation:

In algebra, the multiplicative inverse of a number(x) is a number (say y) such that

$x* y=1$ [product of a number and its inverse =1]

if x= -1, then

$-1* y=1\Rightarrow\ y=-1$

That means , the multiplicative inverse of -1 is -1 itself.

Hence, the multiplicative inverse of – 1 in the set {-1,1} is -1.

if you are just given the two points it is the same formula. Find the midpoint between the points (4,−5) and (−4,5).

Answers

Answer:

$M = (0,0)$

Step-by-step explanation:

Given

$(4,-5)$ and $(-4,5)$

Required

The midpoint (M)

This is calculated as:

$M = (1)/(2)(x_1 + x_2,y_1+y_2)$

So, we have:

$M = (1)/(2)(4-4,-5+5)$

$M = (1)/(2)(0,0)$

$M = (0,0)$

Please help with the last question & explain it to me. Thank you.

Answers

Answer:

No because he only won 3/4 not more than 3/4

Step-by-step explanation:

So the part where it says I have won more than 75% of all the games I have played, it is saying he has won more than 75% or 3/4? Which he only won 3/4 not more. 75% is equal to 3/4.

A restaurant mixes homemade barbecue sauce with their smoked pulled pork using a ratio of two cups of sauce for every four pounds of shredded pulled pork. Write two rates to represent this relationship.

Answers

The two rates that can be used to represent this relationship are:

2 cups : 4 pounds, and
1 cup : 2 pounds

What is a ratio?

A ratio is a comparison between two numbers that can be separated with (:) sign or can be represented as a fraction. This comparison deals with the same units.

However,

A rate of a ratio deals with the comparison between different units.

From the parameters given:

The ratio rates occur between the homemade barbecue and smoked pulled pork

For every 2 cups of barbecue sauce, 4 pounds of pulled pork is used.

Therefore, we can conclude that the two rates that can be used to represent this relationship are:

2 cups : 4 pounds, and
1 cup : 2 pounds

Learn more about ratio here:

brainly.com/question/2914376

Disk requests come in to the disk driver for cylinders 10, 22, 20, 2, 40, 6, and 38, in that order. A seek takes 6 msec per cylinder. How much seek time is needed for (a) First-come, first served. (b) Closest cylinder next. (c) Elevator algorithm (initially moving upward). In all cases, the arm is initially at cylinder 20.

Answers

Answer:

Step-by-step explanation:

The order for FCFS is: 20->10->22->20->2->40->6->38.

Distance is

10+12+2+18+38+34+32 = 146

cylinders, so time is

146* 6 = 876 sec.

The order for elevator is:

20->20->22->38->40->10->6->2.

Distance is

0+2+16+2+30+4+4 = 58

cylinders, so time is

58 * 6 =348 msec.

The order for CCN is:

20->20->22->10->6->2->38->40.

Distance is

0+2+12+4+4+36+2 = 60

cylinders, so time is 60 * 6 =360 msec.

Find reason and statements

Answers

Answer:

Missing reason/statements:

R1, R2, R3 - Given
S4. ∠1 ≅ ∠3
R4. Transitive property
R5. Definition of congruence
S6. m∠1 = 120°
R6. Substitution

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