• Q : Number of children attended the movie....
    Basic Statistics :

    A group of 11 people are going to the movies one Saturday. Adult tickets cost $10.50 each and child tickets cost $6.75 each. If the total cost for admission to the movies is $100.50, how many childr

  • Q : Determine the number of production runs....
    Basic Statistics :

    If the company expects to sell 1,600 microscopes at a fairly uniform rate throughout the year, determine the number of production runs that will minimize the company's overall expenses.

  • Q : Quantity minimizing the inventory cost....
    Basic Statistics :

    Determine the economic order quantity, that is, the order quantity that minimizes the inventory cost.

  • Q : Determine the economic order quantity....
    Basic Statistics :

    Determine the economic order quantity that minimizes the inventory cost, and then and the minimum inventory cost.

  • Q : Problem based on minimum inventory cost....
    Basic Statistics :

    Determine the economic order quantity that minimizes the inventory cost, and then and the minimum inventory cost.

  • Q : Probability that the company will run out of units....
    Basic Statistics :

    Now, suppose that the company currently has 180 units in stock, and it will not be receiving any further shipments from its supplier for at least 3 weeks. What is the probability that the company wi

  • Q : Obtain normal probability plots....
    Basic Statistics :

    Obtain normal probability plots, boxplots, and the standard deviations for the two samples.

  • Q : Frequency distribution for political views....
    Basic Statistics :

    In 2000, 27.7% of incoming freshmen characterized their political views as liberal, 51.9% as moderate, and 20.4% as conservative. For this year, a random sample of 500 incoming college freshmen yie

  • Q : Matchstick squares require to build figure....
    Basic Statistics :

    The first figure takes 5 matchstick squares to build, the second takes 13 to build and the third takes 21 to build How many matchstick squares will it take to build the 11th figure?

  • Q : Computing the number of possibilities....
    Basic Statistics :

    How many different 5-­-card poker hands containing only Diamonds are possible?

  • Q : Level of significance....
    Basic Statistics :

    A random sample of size 56 from a normal population showed a mean of 63 and a sum of squares of deviation from the mean equals to 180. Can this sample be regarded as taken from the population having

  • Q : Data set representing the income levels....
    Basic Statistics :

    Question: The data set represents the income levels of the members of a country club. Estimate the probability that a randomly selected member earns at least $98,000.

  • Q : Probability based question on random selection....
    Basic Statistics :

    A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue.

  • Q : Flipping a coin three times....
    Basic Statistics :

    If you flip a coin three times, the possible outcomes are HHH, HHT, HTH, HTT, THH, THT, TTH, and TTT. What is the probability of getting at least one head.

  • Q : Probability related to random selection....
    Basic Statistics :

    For the following questions, would the following be considered significant if its probability is less than or equal to 0.05? Is it significant to get a 12 when a pair of dice is rolled?

  • Q : Statistics and standard deviation....
    Basic Statistics :

    The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual pr

  • Q : Chi-square goodness of fit hypothesis test....
    Basic Statistics :

    Conduct the Chi-Square goodness of fit hypothesis test at a 5% significance level to determine if her employees are satisfied with their position.

  • Q : Determining the percentile....
    Basic Statistics :

    The amount of Jen s monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile.

  • Q : Problem based on standard deviation....
    Basic Statistics :

    The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 sta

  • Q : Calculate standard deviation and coefficient of variation....
    Basic Statistics :

    You can select 5 values for each of the two data sets and practically calculate the standard deviation and coefficient of variation for each data set to clarify your explanation.

  • Q : Questions based on statistics....
    Basic Statistics :

    If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

  • Q : Resulting distribution of the sample means....
    Basic Statistics :

    Find the mean and the standard deviation of the resulting distribution of sample means for n=36. The mean of the resulting distribution of the sample means is?

  • Q : Total amount of water supplied per hour....
    Basic Statistics :

    What is the total amount of water supplied per hour to the region inside the circle of radius R centered at the sprinkler?

  • Q : Find an expression for the number of bacteria....
    Basic Statistics :

    A bacteria culture starts with 500 bacteria and grows at a rate proportional to its size. After 3 hours there are 8000 bacteria. (a) Find an expression for the number of bacteria after t hours.

  • Q : Volume of inhaled air in the lungs....
    Basic Statistics :

    This explains, in part, why the function ƒ(t) = 1/2 sin (2πt/5) has often been used to model the rate of air flow into the lungs. Use this model to find the volume of inhaled air in the lung

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