Questions Answered

TayyabaRawjani:
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a father gave rs 500 to his 4 children. the eldest one got 2/5 of the money and the remaining amount of money was divided equally among the …
 updated one year ago
 21 replies
 No Medals Yet

TayyabaRawjani:
Group Title
There are 5 people in a room. Make the following simplifying assumptions about their birthdays:
Ignore leap years; assume 365 days in the…
 updated one year ago
 32 replies
 5 Medals

TayyabaRawjani:
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A die is a sixsided figure; each side shows a number of spots; the numbers of spots on the six sides are 1, 2, 3, 4, 5, and 6. Unless the p…
 updated one year ago
 16 replies
 No Medals Yet

TayyabaRawjani:
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There are six chairs in a row. Person A picks one of the chairs at random. Then Person B picks a chair at random from the five chairs that r…
 updated one year ago
 6 replies
 2 Medals

TayyabaRawjani:
Group Title
A standard deck consists of 52 cards,
1. One card is dealt. Find the chance that its color is black and its rank is an even number.
2.One…
 updated one year ago
 68 replies
 3 Medals

TayyabaRawjani:
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A twoday conference is going to be held in a city. The leading newspaper in the city says there is a 10% chance of rain on the first day of…
 updated one year ago
 7 replies
 2 Medals

abhi_abhi:
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Undergraduates in a large university class were asked to record the time they spent on the most recent homework. In a histogram of the recor…
 updated one year ago
 2 replies
 1 Medal

racourty:
Group Title
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average peta…
 updated one year ago
 2 replies
 No Medals Yet

TayyabaRawjani:
Group Title
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average peta…
 updated one year ago
 6 replies
 1 Medal

TayyabaRawjani:
Group Title
A primary school has 138 children who are raising money for charity. The average amount raised per child is $2.10. The teacher has promised …
 updated one year ago
 14 replies
 2 Medals

TayyabaRawjani:
Group Title
Midterm scores in a class have an average of 75 and an SD of 8. Final exam scores in the class have an average of 50 and an SD of 10. The co…
 updated one year ago
 4 replies
 No Medals Yet

TayyabaRawjani:
Group Title
Midterm scores in a class have an average of 75 and an SD of 8. Final exam scores in the class have an average of 50 and an SD of 10. The co…
 updated one year ago
 7 replies
 2 Medals

TayyabaRawjani:
Group Title
An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old.
1…
 updated one year ago
 8 replies
 1 Medal

TayyabaRawjani:
Group Title
The weights of newborns at a hospital have an average of 7 lb and an SD of 1.2 lb. The average head circumference of the newborns is 14 inch…
 updated one year ago
 8 replies
 1 Medal

bek9009:
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The ages of a large group of people have an average of 52 years and an SD of 6 years. The average annual income of the people is $48,000 and…
 updated one year ago
 28 replies
 No Medals Yet

WalterDe:
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A quiz consists of 10 multiple choice questions. Each question is marked either “right” or “wrong.” Each right answer gets 5 points, and 1…
 updated one year ago
 5 replies
 1 Medal

kitty159:
Group Title
he eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs ha…
 updated one year ago
 6 replies
 2 Medals

TayyabaRawjani:
Group Title
The scatter diagram of SAT verbal and math scores in a state is roughly football shaped, and the correlation is 0.65.
1.A student is on the…
 updated one year ago
 2 replies
 1 Medal

TayyabaRawjani:
Group Title
Consider all the married couples in the world. Which of the following do you think is true regarding the association between wife’s age and …
 updated one year ago
 2 replies
 1 Medal

TayyabaRawjani:
Group Title
A large number of children were surveyed. The table below shows the distribution of the time they spent watching TV in the week before the s…
 updated one year ago
 7 replies
 No Medals Yet

TayyabaRawjani:
Group Title
The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 32 mm and an SD of 1.2 mm.Approximately 50% of…
 updated one year ago
 3 replies
 1 Medal

TayyabaRawjani:
Group Title
The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 32 mm and an SD of 1.2 mm.Approximately 50% of…
 updated one year ago
 4 replies
 No Medals Yet

TayyabaRawjani:
Group Title
The distribution of heights of a population of adults is approximately normal with mean 66 inches and SD 2.5 inches.Approximately what perce…
 updated one year ago
 2 replies
 1 Medal

TayyabaRawjani:
Group Title
The distribution of heights of a population of adults is approximately normal with mean 66 inches and SD 2.5 inches. Approximately what perc…
 updated one year ago
 5 replies
 2 Medals

TayyabaRawjani:
Group Title
The distribution of heights of a population of adults is approximately normal with mean 66 inches and SD 2.5 inches. Approximately what perc…
 updated one year ago
 3 replies
 No Medals Yet