Answer:
312 I think, hop[e this helps

Help I need this done

Zachary is buying 4 tires for his car. The table shows the prices and the advertised sales for the same type of tire at 4 tire stores.Based on the advertised sales, at which store will Zachary get the lowest price on 4 tires?

Is the sum of any 2 consecutive prime numbers also prime?

Seventy percent of light aircraft that disappear while in flight in a certain country are subsequently discovered. Of the aircraft that are discovered, 60% have an emergency locator, whereas 90% of the aircraft not discovered do not have an emergency locator. Suppose that a light aircraft has disappeared.a) If it has an emergency locator, what is the probability that it will not be discovered?b) If it does not have an emergency locator, what is the probability that it will be discovered?c) If we consider 10 light aircraft that disappeared in flight with an emergency recorder, what is the probability that 7 of them are discovered?

You buy a gym membership for $60 and then pay $40 each month. If you have atmost $210 to spend on the membership, how many months can you use thegym?

Zachary is buying 4 tires for his car. The table shows the prices and the advertised sales for the same type of tire at 4 tire stores.Based on the advertised sales, at which store will Zachary get the lowest price on 4 tires?

Is the sum of any 2 consecutive prime numbers also prime?

Seventy percent of light aircraft that disappear while in flight in a certain country are subsequently discovered. Of the aircraft that are discovered, 60% have an emergency locator, whereas 90% of the aircraft not discovered do not have an emergency locator. Suppose that a light aircraft has disappeared.a) If it has an emergency locator, what is the probability that it will not be discovered?b) If it does not have an emergency locator, what is the probability that it will be discovered?c) If we consider 10 light aircraft that disappeared in flight with an emergency recorder, what is the probability that 7 of them are discovered?

You buy a gym membership for $60 and then pay $40 each month. If you have atmost $210 to spend on the membership, how many months can you use thegym?

the graph you drew.

The graph would look like this...

D because you can’t put a negative over a exponent

To solve this problem you must apply the following proccedure:

1. You have that 25-foot long board is to be cut into two parts. Then, the first equation is:

a+b=25

2. The longer part is one foot more than twice the shorter part:

a=1+2b

3. The system of equation is:

a+b=25

a=1+2b

4. When you solve it, you obtain:

a=25-b

25-b=1+2b

25-1=2b+b

24/3=b

** b=8 ft**

a=1+2(8)

**a=17 ft**

1. You have that 25-foot long board is to be cut into two parts. Then, the first equation is:

a+b=25

2. The longer part is one foot more than twice the shorter part:

a=1+2b

3. The system of equation is:

a+b=25

a=1+2b

4. When you solve it, you obtain:

a=25-b

25-b=1+2b

25-1=2b+b

24/3=b

a=1+2(8)

**Answer:**

**Step-by-step explanation:**

Hello!

The variable of interest is

X: mark obtained in an aptitude test by a candidate.

This variable has a mean μ= 128.5 and standard deviation σ= 8.2

You have the data of three scores extracted from the pool of aptitude tests taken.

148, 102, 152

The average is calculated as X[bar]= Σx/n= (148+102+152)/3= 134

An outlier is an observation that is significantly distant from the rest of the data set. They usually represent experimental errors (such as a measurement) or atypical observations. Some statistical measurements, such as the sample mean, are severely affected by this type of values and their presence tends to cause misleading results on a statistical analysis.

Using the mean and the standard deviation, an outlier is any value that is three standard deviations away from the mean: μ±3σ

Using the population values you can calculate the limits that classify an observed value as outlier:

μ±3σ

128.5±3*8.2

(103.9; 153.1)

This means that any value below 103.9 and above 153.1 can be considered an outlier.

For this example, there is only one outlier, that this the extracted score 102

I hope this helps!

The states of nature must be mutually exclusive and **collectively exhaustive.**

The states of nature in **decision theory **are defined as mutually exclusive and collectively **exhaustive**, meaning that they are the only possible outcomes of a chance event, and only one of them can occur at a given time.

In other words, the states of nature represent all the possible **outcomes **of a chance event, and they are mutually exclusive because they cannot occur **simultaneously**. For example, if the states of nature are "rain" and "no rain," then either it will rain or it will not rain at a given time, but not both.

The term "**collectively exhaustive**" means that the set of states of nature includes all possible outcomes, so that there are no other **possibilities **beyond the ones listed. This ensures that the decision maker has **considered** all possible outcomes when making a decision.

To learn more about **collectively exhaustive.**, visit:

#SPJ4

**Completed question:**

An initial time study resulted in an average observed time of 2.2 minutes per cycle, and a standard deviation of .3 minutes per cycle. The performance rating was 1.20. What sample size, including the 20 observations in the initial study, would be necessary to have a confidence of 95.44 percent that the observed time was within 4 percent of the true value?

**Answer:**

47

**Step-by-step explanation:**

When doing a statistic study, a sample of the total amount must be taken. This sample must be done randomly, and, to be successful, the sample size (n) must be determined, by:

Where Z(α/2) is the value of the standard normal variable associated with the confidence, S is the standard deviation, and E is the precision. The confidence indicates if the study would have the same result if it would be done several times. For a confidence of 95.44, Z(α/2) = 2.

The standard deviation indicates how much of the products deviate from the ideal value, and the precision indicates how much the result can deviate from the ideal. So, if it may vary 4% of the true value (2.2), thus E = 0.04*2.2 = 0.088.

n = [(2*0.3)/0.088]²

n = 46.48

n = 47 observations.