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Questions

Seven fair coins are flipped. The outcomes are assumed to be independent. Let X be the...

Seven fair coins are flipped. The outcomes are assumed to be independent. Let X be the number of heads.

What is the probability that X < 3?

What is the probability that X ≥ 4?

What is the probability that 3 ≤ X < 7

In: Statistics and Probability

How has the Middle East affected American politics, both domestic and foreign since 1968? Give at...

How has the Middle East affected American politics, both domestic and foreign since 1968? Give at least seven (7) examples of influential Middle Eastern events to support your statement.

In: Psychology

Write a Java program that will add the digits of a person’s birth date to obtain...

Write a Java program that will add the digits of a person’s birth date to obtain a single digit to generate a numerology number.
Write one separate method for each of the following tasks (it goes w/o saying that you will have a main() method along with these):
- date validating
- date crunching

First: Get a Date

Numerology has been used since ancient times to shed light on relationships, health, and global events. Each element in a birth date is believed to possess a special numerical significance. We are going to develop our own rudimentary numerology prediction program. The first thing to do is to ask the user to enter a birth date to process.

You will need to indicate to your user that they need to enter the month, day and year in that order separated by spaces and forward slashes, which look like this: /. An example would be 12 / 25 / 2112. The spaces must be present between the numeric and character input.

Second: Validate the Date

The important and time-consuming portion of this program is validating your input from the user. This means that you need to check to make sure the month is between 1 and 12, the day is appropriate for the month, and the year is between 1500 and 3000, inclusive.

By “the day is appropriate for the month and year”, this means that if a date of January 32^nd is entered or a date of June 0^th is entered, you should recognize and report that. This also means that you should check to see that if the year is a leap year, you should allow February 29^th and if it's not a leap year, you should disallow February 29^th
.

Allow the user to input the entire date before you validate it.
You should continuously re-prompt the user for a date until a valid date is entered (you should use a 'while' loop for this).
If one part of the date fails (month, day, or year), re-prompt for the entire date again. Do not simply re-prompt for the offending part of the date. Output appropriate error messages for the incorrect dates. See the example runs for sample error messages.

Third: Crunch the Date

Then, you need to calculate a single digit from the birth date. For example, if your birth date is 3/19/1955 you add 3+1+9+1+9+5+5 to get 33. You would then break this apart and add 3+3 to get 6.

Once you have calculated the single-digit, PRINT it on the console (see the sample test runs).

You will need to be careful because it is possible to have to “fold” the number more than just once, as in the above example. For example, if the birth date was 7/5/1942, you would add up the individual digits 7+5+1+9+4+2 to get 28, then you would need to add 2 + 8 to get 10. This is still a two-digit number, and needs to be added again – 1 + 0 – to get a single-digit result of 1.
You can simplify the process by adding the month day and year together first (i.e., 7+5+1942, to get 1954) and then breaking down and adding that result (1+9+5+4), which results in 19, which needs to be broken down again to get 1+9 which results in 10, which then results in 1+0, or 1. You should never have to crunch a number more than 3 times and will usually only need to add the digits once.

Solution Suggestions

It might actually be easier to work backward solving this program, like this, checking each step as you complete it:
- Then add the code to take a date and crunch it down to a single digit. For simply testing this code, don’t worry about validating the date or input format yet; declare three variables (for example month, date, year), read in the date to process from the user, and then output the final single-digit number.
- Finally, add code to validate the date that you read from the keyboard before crunching it. Validation will need to include tests for the month, day, and year as well as for using forward slashes between those pieces of information.
- Make sure that your program continuously prompts the user for a date until a valid date is entered.
- Make sure to allow the user to enter the entire date before validating it. In other words, don't just validate the month, then validate the day and then validate the year. Allow the entire date to be entered, then validate it and output an appropriate error message, repeating input if necessary.

Goals

Use most of the concepts in Java that we have learned so far: if/else, while, methods.
- arrays can be used but not required.
Use only the data type int for numbers in this program; there’s no need to calculate floating-point numbers.
Solve a moderately complex Java program using the techniques you’ve learned so far.

Points to Think About

Validate to make sure that the year is between 1500 and 3000, inclusive.
Validate to make sure that the month is between 1 and 12, inclusive.
Validate to make sure that the day is appropriate for the month (at least >=1 and <= 28, 29, 30 or 31 depending on which month and year it is).
Validate that the user uses forward slashes (/) between the month, day, and year.

In: Computer Science

1. When glucose and lactose are both present a. the activator and repressor do not bing...

1. When glucose and lactose are both present

a. the activator and repressor do not bing the DNA

b. the operon is not expressed

c. the operon is expressed

d. only the repressor binds the DNA

e. only the activator binds the DNA

f. the activator and repressor do not bind DNa

2. match the following

cAMP

lactose

operator

DNA sequences where regulatory proteins bind

binds and inactivates the repressor

binds and activates the activator

binds and activates the repressor

bind and inactivate the activator

3.the tryptopan operon

a. is activated when tryptophan levels are low

b. contains genes involved in tryptophan digestion

c. requires a repressor which is always expressed at low levels

d.is controlled by an activator that is turned off by tryptophan

4.whicn of the following is not true about operons

a. they produce a polycystronic mRNA molecule

b. are regulated by two or more allosteric proteins

c. multiple genes are under the control of one promoter

d. operons are only found in eukaryotes

5. transcriptional regulators can either activate or repress gene expression

a. true

b. false

6. which of the following is not true about transcription regulatory proteins?

a. they form covalent bonds with the bases

b. they bind upstream of the transcription start site

c. most bind the DNA at the minor groove

d. they bind using homeodomains, leucine zippers, or zinc fingers

7.these are many steps from DNA to protein. each step can be regulated but the most important step for controlling gene expression is

a. initiation of translation

b. initiation of transcription

c. splicing

d. mRNA export

8. which of the following is true about neuronal cells and muscle cells?

a. they contain a different set of proteins

b. they contain the same genome

c. they contain a differentset of genes

d. they express a different set of genes

In: Biology

Dillon Labs has asked its financial manager to measure the cost of each specific type of...

Dillon Labs has asked its financial manager to measure the cost of each specific type of capital as well as the weighted average cost of capital. The weighted average cost is to be measured by using the following weights:

45%

long-term debt,

15%

preferred stock, and

40%

common stock equity (retained earnings, new common stock, or both). The firm's tax rate is

23%.

Debt The firm can sell for

$1015

12-year,

$1,000-par-value

bond paying annual interest at a

7.00%

coupon rate. A flotation cost of

44%

of the par value is required.

Preferred stock

8.00%

(annual dividend) preferred stock having a par value of

$100

can be sold for

$88

An additional fee of

per share must be paid to the underwriters.

Common stock The firm's common stock is currently selling for

$60

per share. The stock has paid a dividend that has gradually increased for many years, rising from

$2.75

ten years ago to the

$4.70

dividend payment,

Upper D 0D0,

that the company just recently made. If the company wants to issue new new common stock, it will sell them

$2.00

below the current market price to attract investors, and the company will pay

$4.00

per share in flotation costs.

a. Calculate the after-tax cost of debt.

b. Calculate the cost of preferred stock.

c. Calculate the cost of common stock (both retained earnings and new common stock).

d. Calculate the WACC for Dillon Labs.

a. The after-tax cost of debt using the bond's yield to maturity (YTM) is _____ %.