what if you need for a 99 percent CI to be ±10 minutes? what if you need for a 90 percent CI to be ±5 minutes?

Q: 1. The length of the wax candle varies inversely as the amount of time after it has been lit. If a…

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Q: The height of a triangle is increasing at a rate of 2 cm/min while the area of the triangle is…

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Q: How quickly is the pH changing when the pH is 7 and the concentration is increasing by 3 x 10-8 per…

A: Given data:     The expression for the pH of a solution is: p=-log10C. The given pH is: p=7. The…

Q: Kevin scored at the 65th percentile on a test given to 9960 students. How many students scored lower…

A: # Given, Kevin scored at the 65th percentile on a test     given to 9960 students.     Number of…

Q: Assume that the rate of evaporation for water is proportional to the amount of water in a bowl. If…

A: I am going to solve the given problem by using some simple calculus to get the required result.

Q: 1. The frequency of a vibrating string under constant tension is inversely proportional to its…

A: The answer is given as follows.

Q: The decay of radioactive elements can sometimes be used to date events from Earth’s past. In a…

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Q: Suppose that the concentration of a bacteria sample is 60,000 bacteria per miliditer. f the…

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Q: At 1:00 p.m.., oil begins leaking from a tank at a rate of (4 + 0.75t) gallons per hour. , answer…

A: At 1:00 p.m.., oil begins leaking from a tank at a rate of (4 + 0.75t) gallons per hour. , Let time…

Q: It takes 15 minutes for a 100° C object to cool to 80° C in a room at 30° C. How much longer will it…

A: We will find out the required time

Q: One type of strontium has a radioactive decay rate of 1.4% per day. If 30 pounds of this strontium…

A:

Q: When a cake is removed from an oven, its temperature is measured at 300° F. Three minutes later its…

A: Let's find.

Q: A candle on Pauline dresser is 4 inches tall.and burns at a rate of 0.6 inches per hour . How many…

A: Topic - equation in one variable

Q: Each side of a square is increasing at a rate of 8 cm/s. At what rate is the area of the square…

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Q: A car accelerates constantly from speed 0 m/s to 60 m/s in 30 seconds, remains at this speed for 20…

A: First step is to write down all the data that we have.

Q: One speed skater starts across a frozen lake at an average speed of 9 m/s. Ten seconds later, a…

A: Let t= time in second d=distance Also, consider second skater time in second is t .

Q: If a solid is placed in water, the amount undissolved after t seconds is A(t) Aoe-kt. If 30 grams of…

A: Since, we know that the amount of solid undissolved after t seconds is given by:-A(t)=Aoe-ktAlso, we…

Q: In a certain culture of bacteria, the rate of increase is proportional to the number present. (a) If…

A: Model the given problem dpdt=kp if p is the present number of bacteria integrate it on both sides…

Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

A: Area of triangle= 12b hb= baseh=height

Q: The altitude of a triangle is increasing at a rate of 3 cm/min while the area of the triangle is…

A: Given that  The altitude of a triangle is increasing at a rate of 3 cm/min The area of the triangle…

Q: The altitude of a triangle is increasing at a rate of 2.62.6 centimeters/minute while the area of…

A: Given, Area of a triangle, A=8484 cm2 Altitude of a triangle, h=1010 cm The rate of increase of…

Q: If one earthquake has a magnitude of 5 on the Richter scale and a second earthquake has a magnitude…

A: We have to determine the relationship between the intensities of the two earthquakes .

Q: It takes 15 minutes for a 100° C object to cool to 65° C in a room at 30° C. How much longer will it…

A: GivenFor the given information

Q: In the electric currect​ flow, it is found that the resistance​ (measured in the units called​ ohms)…

A: Resistance R ∝ 1/D2 R = k/ D2; where k is the proportionality constant. A wire 0.01 inches in…

Q: A metal sphere cools from 60°C to 50°C in 5 minutes. How much more time (in minutes) will it take to…

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Q: The average height of men in the US is approximately 5ft 10in. What proportion of women represented…

A: It is given that the height of women follows a normal distribution with mean 64.33 in and standard…

Q: A roast turkey is removed from an oven when its temperature has reached 185°F and is placed on a…

A: In the question it is asked to solve for the temperature, also for the time when it is cooled down…

Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

A: Solution: Given that  A=160cm2 ,h=10cm and dA/dt= 2cm2/min  ,dh/dt=1cm/min

Q: The surface area of a cube is increasing at a rate of 349.9 cm/s. At what rate is the side length of…

A: We have to find the rate of change in side

Q: It is known that a cable with a​ cross-sectional area of 0.80sq in. has a capacity to hold 2500 lb.…

A: Area measures the surface of a simple closed region. The units of area are the square of the units…

Q: Suppose that the magnitudes of two earthquakes differ by 1 on the Richter scale. Find the ratio of…

A: Earthquake A be the larger earthquake and earthquake B be the smaller one. The difference in the…

Q: One type of uranium has a radioactive decay rate of 0.4% per day. If 50 pounds of this uranium is…

A: Answer is in next step. please give a like !!

Q: Suppose a tank contains 600 gallons of salt water. If pure water flows into the tank at the rate of…

A: Given a tank contains 600 gallons  of salt water. Pure water flows into the tank at the rate of 7…

Q: If the area of a square is increasing by 10 square inches per minute, how quickly is the length of…

A: Let us consider x inches be the side of the square. Area = x2. We are given that the area of the…

Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

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Q: Acar traveling 25 m/s begins to decelerate at a constant rate of 4 m/s2. After how many seconds does…

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Q: How long will it take to grow 750 to 900 at 12% pa?

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Q: A body at a temperature of 50° F is placed in an oven whose temperature is kept at 150° F. If after…

A: Please refer the attached image for complete solution. THANK YOU.

Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

A: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

Q: In 10 minutes, the body cools from 75 to 55 degree Celsius when temperature of the surrounding is 31…

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Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

A: given that the area of a triangle(A)=140cm2 altitude(h)=20cm dh/dt=1cm/min dA/dt=2cm2/min let the…

Q: If a 250 meters long train is traveling at an average speed of 60 kph, how long it would take that…

A: According to the question, Speed of train 60 kph To convert the speed of train in meter per second,…

Q: A kite travels upwards at 30 mph, while a kid runs away at 6mph. What rate is the distance between…

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Q: Each side of a square is increasing at a rate of 3 cm/s. At what rate is the area of the square…

A: Given:Each side of a square is increasing at a rate of 3 cm/s. At what rate is the area of the…

Q: Given 100 grams of bacteria that decreases at a rate of 1/2 per year. What would be an appropriate…

A: Initial value: 100, Rate: 1/2 per year(decreases). So, the population equation is p(t)=100e-12t…

Q: The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is…

A: Topic = application of derivative

Q: The number of germs in a certain culture increases at a rate proportional to the number present. If…

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Q: If the diameter of a piece of candy was initially 26 mm and after 30 minutes it measured 5mm, what…

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