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Nana76 [90]
3 years ago
7

A researcher wants to test if juvenile hormone (similar to testosterone) is associated with aggression in paper wasps. The resea

rcher films wasp interactions between wasp pairs in which one individual is given extra juvenile hormone. The researcher also films wasp interactions between pairs in which neither individual is given extra testosterone. Filming conditions are the same for each pair and the level of aggression is recorded. What is the control in this experiment?
a. The pairs in which one individual is given extra juvenile hormone is the control.
b. The pairs in which neither individual is given extra juvenile hormone is the control.
c. There is no control; this is an observational study.
d. The similar filming conditions is the control.
Business
1 answer:
Lady_Fox [76]3 years ago
6 0

Answer:

b. The pairs in which neither individual is given extra juvenile hormone is the control

Explanation:

This is an experiment in which the researcher wants to establish a relation between the aggresion in wasp with the juvenile hormone, but to know which are really the effects you need something to compare with, that is called the control group, that is usually in the normal conditions, in this case it corresponds to the pairs in which they don't give the extra juvenile hormone, so the researcher can compare the difference between this pair with the pair in which one of the individuals has extra juvenile hormone.

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Kangaroo Autos is offering free credit on a new $10,000 car: You pay $1,000 down and then $300 a month for the next 30 months. T
gavmur [86]

Answer:

Kangaroo Auto offers the better deal

If the I go for Kangaroo Autos, then I will save $257.69 in today's term

Explanation:

Here we need to compare the present value of the two options;

Present value is the worth today of an amount or series of amount payable or receivable in the future period.

Where a series of equal amount is receivable or payable in the future it is called an annuity.

One of the payment options includes an annuity. Therefore, we need to work out the present value of the annuity. This is done using the following formula:

Present Value = A ×( 1 - (1+r)^(-n))/r

where A = equal cash flow, r- rate per period, n - no. of periods

A = 300, r- rate per month - 12%/12 = 1% , n= 30

PV = 300 ×(1- (1+0.01)^(-30))/0.01

    = 300 × 25.877

     =7,742.31

Now we can work out he cost of each option  and comapare them in today's Dollar:

Option 1 : Kangaroo Autos

Total cost of option 1 = deposit + PV of annuity

                                  =   1000 + 7,742.31

              cost              = 8,742.31

Option 2: Turtle Motors:

Price =  Car price - Discount

        =   $10,000 - $1000

     cost    =   $9,000

Kangaroo Auto offers a better  deal.

If  I go for Kangaroo Autos, then I will save $257.69 in today's term

4 0
3 years ago
After purchasing a coffee cup from your local gas station for $5.00, you can always refill your cup for $0.50. The sunk cost of
Law Incorporation [45]

Answer:

$4.50

Explanation:

The sunk cost is the cost that has been incurred and is unrecoverable in the process of taking a financing decision.

If the cost of a coffee cup from a local gas station cost $5.00 and the cost of refill is $0.50, the coffee is the actual element needed and from the refill, it can be estimated that it costs $0.50.

Hence the sunk or unrecoverable cost is the difference between the coffee cup and the refill cost

= $5.00 - $0.50

= $4.50

3 0
2 years ago
If you were originally a lender, remain a lender even after a decline in interest rates. Will you get better or worse after the
Anestetic [448]

Answer:

If the lender rate decline he will be worst of due to consumer buying behavior.

Explanation:

  • Lenders are creditors and not all creditors are leanders. During a decline in the interest rates goes down and borrowing gets cheaper. The leander will be worse after the interest rates decline. If the interest rate rises or changes the lender may get higher rates.
4 0
2 years ago
According to AAA the average monthly maintenance cost on a used car is $75 per month. You are looking to pay cash for the exact
Colt1911 [192]

Answer:

Dealer "B"  at $5,595.00

Explanation:

Comparison of cost charges for dealer A and dealer B will have to include the one-year maintenance offered by dealer B.

The cost for dealer A will be

maintenance for one year= $75 x 12=  $900

cost of the car=  $4,995.00.

total cost for dealer A

= $4,995.00 + $900

=$5,895

The cost from dealer B is $5,595.

Dealer B has the better deal as they are cheaper by $300

( $5,895- $5,595)

5 0
2 years ago
You just received a gift from a friend consisting of 1,000 Thai baht, which you would like to exchange for Australian dollars (A
yanalaym [24]

Answer:

AUD 39.93 is expected to be received for your baht.

Explanation:

To calcuate the cross currency exchange rate between Thai Baht and AUD, inverse the USD per Thai Baht quote, this will give you (1/0.023 = 43.478). Now, multiply this by USD per AUD ( TBHT by USD multiplied by USD by AUD, thus USD will cancel out and leave you with TBHT by AUD). The Final ER will stand at TBHT 25.0434 per AUD. Divide the sum of TBHT 1000 by 25.0434 and you will recieve AUD 39.93

3 0
3 years ago
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