Postini is a global company specializing in communications security. The company has
determined that 91% of all e-mails are actually spam. If you check your e-mail in the morning
and see that you have 25 new messages, what is the probability that:
a. (5 points) Exactly 5 of them are spam?
b. (5 points) Less than 20 of them are spam?
c. (5 points) Ten or more of them are spam?

Answers

Answer 1
a. The probability that exactly 5 of the 25 emails are spam is approximately 0.228, or 22.8%. This can be calculated using the binomial distribution formula: P(X = 5) = (25 choose 5) * (0.91)^5 * (0.09)^20, where "choose" is the binomial coefficient.

b. The probability that less than 20 of the 25 emails are spam is 0000….

Related Questions

Write a brief paragraph that articulates your analysis of picture. Support your analysis with evidence from the cartoon.

Answers

The picture is called the cow pork, the effect of analysis of new innovation , the publication of anti vaccine society

What is the picture  about?

The cartoon possibly refers to the influence of novel advancements and advancements in technology on the populace, particularly regarding immunization. The name "The Cow Pork" seems to cleverly allude to both cows, which are typically connected to vaccines, and pork, which could be a nod to the contentious issue of utilizing pork-based components in vaccines.

The cartoon could be interpreted as a commentary on the emergence of anti-vaccination beliefs among individuals and the possible adverse outcomes that may result from disregarding scientific progress. It is challenging to offer an in-depth examination as there is a lack of additional information or visuals.

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“Little Red Riding Hood” is what type of story?

fable

myth

legend

morality tale

Answers

Morality tale
Or
Fairy tale

Terrence is playing with his four-year-old son Jacob, using a tablet app that records sounds from the environment. When they have recorded all the sounds they want, they can use the app to layer sounds over one another to create a mashup-like song. What are Terrence and Jacob doing together?


strengthening gross motor skills


creating not consuming


co-viewing


setting screen time limits

Answers

The correct option is (b) creating not consuming.

Terrence and Jacob are engaging in a creative and interactive activity that involves active participation and collaboration.

By using a tablet app that allows them to record and layer sounds to create a unique musical composition, they are actively involved in the creation process, which can foster a sense of accomplishment and promote creativity.

This activity also encourages exploration and experimentation with sounds, which can develop critical thinking skills and enhance problem-solving abilities. Terrence and Jacob are strengthening their bond and developing communication skills through co-creating and sharing ideas.

This activity is an excellent way for parents and children to engage in meaningful, screen-time activities that are both educational and fun.

The right answer is (b) creating not consuming.

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In general, childcare workers should use their personal technological devices only when children are occupied or asleep.


True


False

Answers

It is a false statement that childcare workers should use their personal technological devices only when children are occupied or asleep.

Should childcare workers use their personal technological devices?

Childcare workers should not rely on personal technological devices while on duty even when children are occupied or asleep. The primary responsibility of childcare workers is to ensure the safety, well-being and development of the children under their care.

Using personal devices during work hours can be a distraction and may prevent them from fully engaging with the children or attending to  needs. It is essential for childcare workers to be present and attentive and as well actively engaging with children through play, learning activities and supervision.

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Sandy is the mother of a toddler at the childcare facility where you work. She has dropped off her son Nathan at the facility and it appears that he is sick—to make sure, you check his fever and find out that it is 102°. You call her to ask her about the situation, and she says that she knew he was sick, but she cannot miss work today, so he needs to stay at the center. Your facility’s sick child policy states that sick children with fevers over 101° need to stay home until 24 hours has passed from the time the fever went below 100°. How would you respond to Sandy in a way that maintains professionalism and a good relationship with her while still enforcing the sick child policy? Please write a verbatim “script” for what you could say to her.

Answers

Answer:"Hello Sandy, this is [Your Name] from the childcare facility. I wanted to let you know that we've checked Nathan's temperature and it is currently at 102°F. I understand that you're in a difficult situation, but I want to remind you that our sick child policy requires that children with fevers over 101°F stay at home until they have been fever-free for at least 24 hours. This is important for the safety and well-being of all the children in our care. I understand that missing work can be challenging, but I strongly encourage you to make arrangements for Nathan to stay home until his fever has gone down. Thank you for your understanding and cooperation."

Explanation:

Need Opinions, do you think that minimum wage is a reasonable and fair livable wage in the United States?

Answers

Answer:

Depends on the state/region. Higher tax states are generally more unlivable despite higher minimum wages. However, most states are quite unlivable even in low-tax states.

Explanation:

We can see this when seeing the living standards in LA (California) (high tax/high minimum wage) and Cheyenne (Wyoming) (low tax/low minimum wage).  In LA, you are working at a $15 wage and you will never live in a suburban house. You are confined to a small apartment trying to meet monthly ends. In Cheyenne, you are around $5 an hour with slightly better odds, but with largely the same situation.


So does this mean minimum wages should be raised?

Not really. With recessions, the value of workers has gone down, which means workers can be paid less with the same amount of labor demand. Also, although very minimal,  wage increases causes a rise in inflation (0.5-1% only).  Even though living standards generally improve with wage increases, it can be argued that it is because the purchasing power was restored (to the origin) after inflation decreased it. Wages increase mostly only to offset inflation.

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