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1. How heavy an object can be lifted with a suction cup having a lip with a 100-mm outside diameter and an 80-mm inside diameter for each suction pressure?
a. -50 kPa gage
b. A perfect vacuum Assume a factor of safety of
2. A pneumatic vacuum lift, system uses six suction cups, each having a lip with a loo-mm outside diameter and an 80-mm inside diameter. The vacuum system is to lift large steel sheets weighing 1500 N. The total volume inside the cup cavities, and associated piping up to the vacuum pump is 0.20 m3. If a factor of safety of 2 is used, what flow rate must the vacuum pump deliver if the time required to produce the desired vacuum pressure is 2.0 min?
a sample of 100 msnbc viewers shows an average household income of 119 k and a standard deviation of 30k.a. what would
The purpose of these four trials was to discover the effects of" these two alloying elements (nickel and manganese) on the breaking strength of a certain
Internal study by Technology Services department at Lahey Electronics disclosed company employees get the average of 2 emails per hour. Suppose arrival of these emails is approximated by Poisson distribution.
A coin which lands heads with probability p is tossed repeatedly. Assuming independence of the tosses, find formula for
Aw, nuts! A company claims that each batch of its deluxe mixed nuts contains 52% cashews, 27% almonds, 13% macadamia nuts, and 8% brazil nuts.
a. After Joe came back, what is the expected time until the next bulb failure? b. What is the expected length of time between the fourth bulb failure
To test this claim, an analyst looks at a random sample of 100 real estate deals in the period in question and finds a sample mean of 14.1% and a sample standard deviation of 2.6%. Conduct a twotailed test using the 0.05 level of significance.
Develop a point of the population standard deviation for life expectancy of VCRs.
Conduct a hypothesis test to determine if the mean length of jail time has increased. The distribution of the population is normal. Is this a test of means or
Prepare a frequency distribution table for these data using single-valued classes - Compute the relative frequency and percentage distributions.
Kids and toys In an experiment on the behavior of young children, each subject is placed in an area with five toys. Past experiments have shown.
A chi-square test of independence could be used to examine the relationship between overhead light preference (on or off) and glasses use.
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